Publications in 2023 (14 papers + 7 submitted)
320. Large out-of-plane spin-orbit torque in topological Weyl semimetal candidate TaIrTe4
L. Bainsla, B. Zhao, A. M. Hoque, L. Sjöström, N. Behera, M. Abdel-Hafiez, J. Åkerman, and S. P. Dash
arXiv:2310.06395
319. Ultra-low current 10 nm spin Hall nano-oscillators
N. Behera, A. Kumar Chaurasiya, V. H. González, A. Litvinenko, L. Bainsla, A. Kumar, A. A. Awad, H. Fulara, and J. Åkerman
arXiv:2305.06779
318. Coexisting and interacting spin torque driven free and reference layer magnetic droplet solitons
S. Jiang, S. Chung, M. Ahlberg, A. Frisk, Q. Tuan Le, H. Mazraati, A. Houshang, O. Heinonen, and J. Åkerman
arXiv:2304.05825
317. Roadmap for unconventional computing with nanotechnology
G. Finocchio, S. Bandyopadhyay, P. Lin, G. Pan, J. J. Yang, R. Tomasello, C. Panagopoulos, M. Carpentieri, V. Puliafito, J. Åkerman, H. Takesue, A. R. Trivedi, S. Mukhopadhyay, K. Roy, V. K. Sangwan, M. C. Hersam, A. Giordano, H. Yang, J. Grollier, K. Camsari, P. Mcmahon, S. Datta, J. A. Incorvia, J. Friedman, S. Cotofana, F. Ciubotaru, A. Chumak, A. J. Naeemi, B. K. Kaushik, Y. Zhu, K. Wang, B. Koiller, G. Aguilar, G. Temporão, K. Makasheva, A. T. Sanial, J. Hasler, W. Levy, V. Roychowdhury, S. Ganguly, A. Ghosh, D. Rodriquez, S. Sunada, K. Evershor-Sitte, A. Lal, S. Jadhav, M. Di Ventra, Y. Pershin, K. Tatsumura, H. Goto
arXiv:2301.06727
316. Inhomogeneous magnon scattering during ultrafast demagnetization
R. Knut, E. K. Delczeg-Czirjak, S. Jana, J. M. Shaw, H. T. Nembach, Y. Kvashnin, R. Stefaniuk, R. S. Malik, P. Grychtol, D. Zusin, C. Gentry, R. Chimata, M. Pereiro, J. Söderström, E. Turgut, M. Ahlberg, J. Åkerman, H. C. Kapteyn, M. M. Murnane, D. A. Arena, O. Eriksson, O. Karis, T. J. Silva
arXiv:1810.10994
315. Anomalous nonlinearity of the magnonic edge mode
M. Dvornik and J. Åkerman
arXiv:1804.01585
314. Tunable spin pumping in exchange coupled magnetic trilayers
M. Fazlali, M. Ahlberg, M. Dvornik, and J. Åkerman
arXiv:1709.02295
313. Spin Pumping in Moderately Perpendicular W/CoFeB/HfOx Thin Films
S. Gaur, N. Behera, J. Åkerman, and A. Raghav
SPIN, 2340022
312. Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic Applications
W-B Wu, J. Kasiuk, J. Przewoźnik, Cz. Kapusta, I. Svito, K. Tung Do, T. Huong Nguyen, H. Manh Dinh, J. Åkerman, and Anh Nguyen TN
Materials Transactions 64, 2124 (2023)
311. A spinwave Ising machine
A. Litvinenko, R. Khymyn, V. H. González, R. Ovcharov, A. A. Awad, V. Tyberkevych, A. Slavin, and J. Åkerman
Communications Physics 6, 227 (2023)
310. Identifying and Exploring Synthetic Antiferromagnetic Skyrmions
Y. Zhao, S. Yang, K. Wu, S. Li, Y. Gao, H. Hao, X. Zhang, S. Wang, Q. Liu, S. Zhang, Z. Chu, J. Åkerman, and Yan Zhou
Advanced Functional Materials, doi:adfm.202303133 (2023)
309. Robust mutual synchronization in long spin Hall nano-oscillator chains
A. Kumar, H. Fulara, R. Khymyn, A. Litvinenko, M. Zahedinejad, M. Rajabali, X. Zhao, N. Behera, A. Houshang, A. A. Awad, and J. Åkerman
Nano Letters 23, 6720 (2023)
308. Topology-induced chiral photon emission from a large-scale meron lattice
X. Wu, X. Li, W. Kang, X. Zhang, L. Chen, Z. Zhong, Y. Zhou, J. Åkerman, Y. Wu, R. Zhang, and J. Kang
Nature Electronics 6, 516 (2023)
307. Reversible conversion between skyrmions and skyrmioniums
S. Yang, Y. Zhao, K. Wu, Z. Chu, X. Xu, X. Li, J. Åkerman, and Y. Zhou
Nature Communications 14, 3406 (2023)
306. Phase noise analysis of mutually synchronized spin Hall nano-oscillators
A. Litvinenko, A. Kumar, M. Rajabali, A. A. Awad, R. Khymyn, and J. Åkerman
Applied Physics Letters 122, 222401 (2023)
305. Antiferromagnetic Bloch Line Driven by Spin Current as Room-Temperature Analogue of a Fluxon in a Long Josephson Junction
R.V. Ovcharov, B.A. Ivanov, J. Åkerman, and R.S. Khymyn
Physical Review Applied 20, 034060 (2023)
304. Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
S. Jana, R. Knut, E. K. Delczeg-Czirjak, R. S. Malik, R. Stefanuik, J. A. Terschlüsen, R. Chimata, D. Phuyal, M. V. Kamalakar, S. Akansel, D. Primetzhofer, M. Ahlberg, J. Söderström, J. Åkerman, P. Svedlindh, O. Eriksson, and O. Karis
Physical Review B 107, L180301 (2023)
303. Angular Dependent Auto-Oscillations by Spin-Transfer and Spin-Orbit Torques in Three-Terminal Magnetic Tunnel Junctions
W. Cai, A. Kumar, A. Du, K. Shi, R. Xiao, K. Cao, J. Yin, J. Åkerman, and W. Zhao
IEEE Electron Device Letters 44, 861 (2023)
302. Injection Locking of Lineralike and Soliton Spin-Wave Modes in Nanoconstriction Spin Hall Nano-oscillators
M. Rajabali, R. Ovcharov, R. Khymyn, H. Fulara, A. Kumar, A. Litvinenko, M. Zahedinejad, A. Houshang, A. A. Awad, and J. Åkerman
Physical Review Applied 19, 034070 (2023)
301. Field-free high-frequency exchange-spring spint-torque nano-oscillators
S. Jiang, S. Chung, Q. Tuan Le, P. K. J. Wong, W. Zhang, and J. Åkerman
Nano Letters 23, 1159 (2023)
300. CMOS Front End for Interfacing Spin-Hall Nano-Oscillators for Neuromorphic Computing in the GHz Range
R. Fiorelli, E. Peralías, R. Méndez-Romero, M. Rajabali, A. Kumar, M. Zahedinejad, J. Åkerman, F. Moradi, T. Serrano-Gotarredona, and B. Linares-Barranco
Electronics 12, 230 (2023)
L. Bainsla, B. Zhao, A. M. Hoque, L. Sjöström, N. Behera, M. Abdel-Hafiez, J. Åkerman, and S. P. Dash
arXiv:2310.06395
319. Ultra-low current 10 nm spin Hall nano-oscillators
N. Behera, A. Kumar Chaurasiya, V. H. González, A. Litvinenko, L. Bainsla, A. Kumar, A. A. Awad, H. Fulara, and J. Åkerman
arXiv:2305.06779
318. Coexisting and interacting spin torque driven free and reference layer magnetic droplet solitons
S. Jiang, S. Chung, M. Ahlberg, A. Frisk, Q. Tuan Le, H. Mazraati, A. Houshang, O. Heinonen, and J. Åkerman
arXiv:2304.05825
317. Roadmap for unconventional computing with nanotechnology
G. Finocchio, S. Bandyopadhyay, P. Lin, G. Pan, J. J. Yang, R. Tomasello, C. Panagopoulos, M. Carpentieri, V. Puliafito, J. Åkerman, H. Takesue, A. R. Trivedi, S. Mukhopadhyay, K. Roy, V. K. Sangwan, M. C. Hersam, A. Giordano, H. Yang, J. Grollier, K. Camsari, P. Mcmahon, S. Datta, J. A. Incorvia, J. Friedman, S. Cotofana, F. Ciubotaru, A. Chumak, A. J. Naeemi, B. K. Kaushik, Y. Zhu, K. Wang, B. Koiller, G. Aguilar, G. Temporão, K. Makasheva, A. T. Sanial, J. Hasler, W. Levy, V. Roychowdhury, S. Ganguly, A. Ghosh, D. Rodriquez, S. Sunada, K. Evershor-Sitte, A. Lal, S. Jadhav, M. Di Ventra, Y. Pershin, K. Tatsumura, H. Goto
arXiv:2301.06727
316. Inhomogeneous magnon scattering during ultrafast demagnetization
R. Knut, E. K. Delczeg-Czirjak, S. Jana, J. M. Shaw, H. T. Nembach, Y. Kvashnin, R. Stefaniuk, R. S. Malik, P. Grychtol, D. Zusin, C. Gentry, R. Chimata, M. Pereiro, J. Söderström, E. Turgut, M. Ahlberg, J. Åkerman, H. C. Kapteyn, M. M. Murnane, D. A. Arena, O. Eriksson, O. Karis, T. J. Silva
arXiv:1810.10994
315. Anomalous nonlinearity of the magnonic edge mode
M. Dvornik and J. Åkerman
arXiv:1804.01585
314. Tunable spin pumping in exchange coupled magnetic trilayers
M. Fazlali, M. Ahlberg, M. Dvornik, and J. Åkerman
arXiv:1709.02295
313. Spin Pumping in Moderately Perpendicular W/CoFeB/HfOx Thin Films
S. Gaur, N. Behera, J. Åkerman, and A. Raghav
SPIN, 2340022
312. Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic Applications
W-B Wu, J. Kasiuk, J. Przewoźnik, Cz. Kapusta, I. Svito, K. Tung Do, T. Huong Nguyen, H. Manh Dinh, J. Åkerman, and Anh Nguyen TN
Materials Transactions 64, 2124 (2023)
311. A spinwave Ising machine
A. Litvinenko, R. Khymyn, V. H. González, R. Ovcharov, A. A. Awad, V. Tyberkevych, A. Slavin, and J. Åkerman
Communications Physics 6, 227 (2023)
310. Identifying and Exploring Synthetic Antiferromagnetic Skyrmions
Y. Zhao, S. Yang, K. Wu, S. Li, Y. Gao, H. Hao, X. Zhang, S. Wang, Q. Liu, S. Zhang, Z. Chu, J. Åkerman, and Yan Zhou
Advanced Functional Materials, doi:adfm.202303133 (2023)
309. Robust mutual synchronization in long spin Hall nano-oscillator chains
A. Kumar, H. Fulara, R. Khymyn, A. Litvinenko, M. Zahedinejad, M. Rajabali, X. Zhao, N. Behera, A. Houshang, A. A. Awad, and J. Åkerman
Nano Letters 23, 6720 (2023)
308. Topology-induced chiral photon emission from a large-scale meron lattice
X. Wu, X. Li, W. Kang, X. Zhang, L. Chen, Z. Zhong, Y. Zhou, J. Åkerman, Y. Wu, R. Zhang, and J. Kang
Nature Electronics 6, 516 (2023)
307. Reversible conversion between skyrmions and skyrmioniums
S. Yang, Y. Zhao, K. Wu, Z. Chu, X. Xu, X. Li, J. Åkerman, and Y. Zhou
Nature Communications 14, 3406 (2023)
306. Phase noise analysis of mutually synchronized spin Hall nano-oscillators
A. Litvinenko, A. Kumar, M. Rajabali, A. A. Awad, R. Khymyn, and J. Åkerman
Applied Physics Letters 122, 222401 (2023)
305. Antiferromagnetic Bloch Line Driven by Spin Current as Room-Temperature Analogue of a Fluxon in a Long Josephson Junction
R.V. Ovcharov, B.A. Ivanov, J. Åkerman, and R.S. Khymyn
Physical Review Applied 20, 034060 (2023)
304. Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
S. Jana, R. Knut, E. K. Delczeg-Czirjak, R. S. Malik, R. Stefanuik, J. A. Terschlüsen, R. Chimata, D. Phuyal, M. V. Kamalakar, S. Akansel, D. Primetzhofer, M. Ahlberg, J. Söderström, J. Åkerman, P. Svedlindh, O. Eriksson, and O. Karis
Physical Review B 107, L180301 (2023)
303. Angular Dependent Auto-Oscillations by Spin-Transfer and Spin-Orbit Torques in Three-Terminal Magnetic Tunnel Junctions
W. Cai, A. Kumar, A. Du, K. Shi, R. Xiao, K. Cao, J. Yin, J. Åkerman, and W. Zhao
IEEE Electron Device Letters 44, 861 (2023)
302. Injection Locking of Lineralike and Soliton Spin-Wave Modes in Nanoconstriction Spin Hall Nano-oscillators
M. Rajabali, R. Ovcharov, R. Khymyn, H. Fulara, A. Kumar, A. Litvinenko, M. Zahedinejad, A. Houshang, A. A. Awad, and J. Åkerman
Physical Review Applied 19, 034070 (2023)
301. Field-free high-frequency exchange-spring spint-torque nano-oscillators
S. Jiang, S. Chung, Q. Tuan Le, P. K. J. Wong, W. Zhang, and J. Åkerman
Nano Letters 23, 1159 (2023)
300. CMOS Front End for Interfacing Spin-Hall Nano-Oscillators for Neuromorphic Computing in the GHz Range
R. Fiorelli, E. Peralías, R. Méndez-Romero, M. Rajabali, A. Kumar, M. Zahedinejad, J. Åkerman, F. Moradi, T. Serrano-Gotarredona, and B. Linares-Barranco
Electronics 12, 230 (2023)
Publications in 2022 (15 papers)
299. Voltage control of frequency, effective damping, and threshold current in nano-constriction-based spin Hall nano-oscillators
V. H. González, R. Khymyn, H. Fulara, A. A. Awad, and J. Åkerman
Appl. Phys. Lett. 121, 252404 (2022)
298. Energy-Efficient W100-xTax/Co-Fe-B/MgO Spin Hall Nano-Oscillators
N. Behera, H. Fulara, L. Bainsla, A. Kumar, M. Zahedinejad, A. Houshang, and J. Åkerman
Phys. Rev. Appl. 18, 024017 (2022)
297. Inducing Dzyaloshinskii-Moriya interaction in symmetrical multilayers using post annealing
K. Ahmadi, F. Mahfouzi, L. Jamilpanah, M. Mohseni, T. Böttcher, P. Pirro, J. Åkerman, S. A. S. Ebrahimi, S. M. Mohseni
Sci. Rep. 12, 11877 (2022)
296. Mutual Synchronization of Constriction-Based Spin Hall Nano-Oscillators in Weak In-Plane Fields
H. Mazraati, S. Muralidhar, S. R. Etesami, M. Zahedinejad, S. A. H. Banuazizi, S. Chung, A. A. Awad, R. Khymyn, M. Dvornik, and J. Åkerman
Phys. Rev. Appl. 18, 014026 (2022)
295. Optothermal control of spin Hall nano-oscillators
S. Muralidhar, A. Houshang, A. Alemán, R. Khymyn, A. A. Awad, and J. Åkerman
Appl. Phys. Lett. 120, 262401 (2022)
294. Magnetic force microscopy of an operational spin nano-oscillator
S. A. H. Banuazizi, A. Houshang, A. A. Awad, J. Mohammadi, J. Åkerman, and L. M. Belova,
Microsystems & Nanoengineering 8, 65 (2022)
293. Ultrathin Ferrimagnetic GdFeCo Films with Low Damping
L. Bainsla, A. Kumar, A. A. Awad, C. Wang, M. Zahedinejad, N. Behera, H. Fulara, R. Khymyn, A. Houshang, J. Weissenrieder, and J. Åkerman
Adv. Func. Mater. 32, 2111693 (2022)
292. Freezing and thawing magnetic droplet solitons
M. Ahlberg, S. Chung, S. Jiang, A. Frisk, M. Khademi, R. Khymyn, A. A. Awad, Q. Tuan Le, H. Mazraati, M. Weigand, I. Bykova, F. Gross, E. Goering, G. Schütz, J. Gräfe, and J. Åkerman
Nature Communications 13, 2462 (2022)
291. Experimental confirmation of the delayed Ni demagnetization in FeNi alloy
S. Jana, R. Knut, S. Muralidhar, R. S. Malik, R. Stefanuik, J. Åkerman, O. Karis, C. Schüssler-Langeheine, N. Pontius
Appl. Phys. Lett. 120, 102404 (2022)
290. Advances in magnetics roadmap on spin-wave computing
A. V Chumak, P. Kabos, M. Wu, C. Abert, C. Adelmann, A. O. Adeyeye, J. Åkerman, F. G. Aliev, A. Anane, A. Awad, C. H. Back, A. Barman, G. E. W. Bauer, M. Becherer, E. N. Beginin, V. A. S. V. Bittencourt, Y. M. Blanter, P. Bortolotti, I. Boventer, D. A. Bozhko, S. A. Bunyaev, J. J. Carmiggelt, R. R. Cheenikundil, F. Ciubotaru, S. Cotofana, G. Csaba, O. V. Dobrovolskiy, C. Dubs, M. Elyasi, K. G. Fripp, H. Fulara, I. A. Golovchanskiy, C. Gonzalez-Ballestero, P. Graczyk, D. Grundler, P. Gruszecki, G. Gubbiotti, K. Guslienko, A. Haldar, S. Hamdioui, R. Hertel, B. Hillebrands, T. Hioki, A. Houshang, C.-M. Hu, H. Huebl, M. Huth, E. Iacocca, M. B. Jungfleisch, G. N. Kakazei, A. Khitun, R. Khymyn, T. Kikkawa, M. Kläui, O. Klein, J. W. Kłos, S. Knauer, S. Koraltan, M. Kostylev, M. Krawczyk, I. N. Krivorotov, V. V. Kruglyak, D. Lachance-Quirion, S. Ladak, R. Lebrun, Y. Li, M. Lindner, R. Macêdo, S. Mayr, G. A. Melkov, S. Mieszczak, Y. Nakamura, H. T. Nembach, A. A. Nikitin, S. A. Nikitov, V. Novosad, J. A. Otalora, Y. Otani, A. Papp, B. Pigeau, P. Pirro, W. Porod, F. Porrati, H. Qin, B. Rana, T. Reimann, F. Riente, O. Romero-Isart, A. Ross, A. V. Sadovnikov, A. R. Safin, E. Saitoh, G. Schmidt, H. Schultheiss, K. Schultheiss, A. A. Serga, S. Sharma, J. M. Shaw, D. Suess, O. Surzhenko, K. Szulc, T. Taniguchi, M. Urbanek, K. Usami, A. B. Ustinov, T. Van der Sar, S. van Dijken, V. I. Vasyuchka, R. Verba, S. V. Kusminskiy, Q. Wang, M. Weides, M. Weiler, S. Wintz, S. P. Wolski, X. Zhang
IEEE Trans. Magn. 58, 0800172 (2022)
289. Observation of magnetic droplets in magnetic tunnel junctions
K. Shi, W. Cai, S. Jiang, D. Zhu, K. Cao, Z. Guo, J. Wei, A. Du, Z. Li, Y. Huang, J. Yin, J. Åkerman, and W Zhao
Sci. China Phys. Mech. Astron. 65, 227511 (2022)
288. Phase-Binarized Spin Hall Nano-Oscillator Arrays: Towards Spin Hall Ising Machines
A. Houshang, M. Zahedinejad, S. Muralidhar, J. Chęciński, R. Khymyn, M. Rajabali, H. Fular, A. A. Awad, M. Dvornik, and J. Åkerman
Phys. Rev. Appl. 17, 014003 (2022)
287. Femtosecond laser comb driven perpendicular standing spin waves
A. A. Awad, S. Muralidhar, A. Alemán, R. Khymyn, D. Hanstorp, and J. Åkerman
Appl. Phys. Lett. 120, 012405 (2022)
286. Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic computing
M. Zahedinejad, H. Fulara, R. Khymyn, A. Houshang, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, and J. Åkerman
Nature Materials 21, 81 (2022)
285. Fabrication of voltage-gated spin Hall nano-oscillators
A. Kumar, M. Rajabali, V. H. González, M. Zahedinejad, A. Houshang, and J. Åkerman
Nanoscale 14, 1432 (2022)
V. H. González, R. Khymyn, H. Fulara, A. A. Awad, and J. Åkerman
Appl. Phys. Lett. 121, 252404 (2022)
298. Energy-Efficient W100-xTax/Co-Fe-B/MgO Spin Hall Nano-Oscillators
N. Behera, H. Fulara, L. Bainsla, A. Kumar, M. Zahedinejad, A. Houshang, and J. Åkerman
Phys. Rev. Appl. 18, 024017 (2022)
297. Inducing Dzyaloshinskii-Moriya interaction in symmetrical multilayers using post annealing
K. Ahmadi, F. Mahfouzi, L. Jamilpanah, M. Mohseni, T. Böttcher, P. Pirro, J. Åkerman, S. A. S. Ebrahimi, S. M. Mohseni
Sci. Rep. 12, 11877 (2022)
296. Mutual Synchronization of Constriction-Based Spin Hall Nano-Oscillators in Weak In-Plane Fields
H. Mazraati, S. Muralidhar, S. R. Etesami, M. Zahedinejad, S. A. H. Banuazizi, S. Chung, A. A. Awad, R. Khymyn, M. Dvornik, and J. Åkerman
Phys. Rev. Appl. 18, 014026 (2022)
295. Optothermal control of spin Hall nano-oscillators
S. Muralidhar, A. Houshang, A. Alemán, R. Khymyn, A. A. Awad, and J. Åkerman
Appl. Phys. Lett. 120, 262401 (2022)
294. Magnetic force microscopy of an operational spin nano-oscillator
S. A. H. Banuazizi, A. Houshang, A. A. Awad, J. Mohammadi, J. Åkerman, and L. M. Belova,
Microsystems & Nanoengineering 8, 65 (2022)
293. Ultrathin Ferrimagnetic GdFeCo Films with Low Damping
L. Bainsla, A. Kumar, A. A. Awad, C. Wang, M. Zahedinejad, N. Behera, H. Fulara, R. Khymyn, A. Houshang, J. Weissenrieder, and J. Åkerman
Adv. Func. Mater. 32, 2111693 (2022)
292. Freezing and thawing magnetic droplet solitons
M. Ahlberg, S. Chung, S. Jiang, A. Frisk, M. Khademi, R. Khymyn, A. A. Awad, Q. Tuan Le, H. Mazraati, M. Weigand, I. Bykova, F. Gross, E. Goering, G. Schütz, J. Gräfe, and J. Åkerman
Nature Communications 13, 2462 (2022)
291. Experimental confirmation of the delayed Ni demagnetization in FeNi alloy
S. Jana, R. Knut, S. Muralidhar, R. S. Malik, R. Stefanuik, J. Åkerman, O. Karis, C. Schüssler-Langeheine, N. Pontius
Appl. Phys. Lett. 120, 102404 (2022)
290. Advances in magnetics roadmap on spin-wave computing
A. V Chumak, P. Kabos, M. Wu, C. Abert, C. Adelmann, A. O. Adeyeye, J. Åkerman, F. G. Aliev, A. Anane, A. Awad, C. H. Back, A. Barman, G. E. W. Bauer, M. Becherer, E. N. Beginin, V. A. S. V. Bittencourt, Y. M. Blanter, P. Bortolotti, I. Boventer, D. A. Bozhko, S. A. Bunyaev, J. J. Carmiggelt, R. R. Cheenikundil, F. Ciubotaru, S. Cotofana, G. Csaba, O. V. Dobrovolskiy, C. Dubs, M. Elyasi, K. G. Fripp, H. Fulara, I. A. Golovchanskiy, C. Gonzalez-Ballestero, P. Graczyk, D. Grundler, P. Gruszecki, G. Gubbiotti, K. Guslienko, A. Haldar, S. Hamdioui, R. Hertel, B. Hillebrands, T. Hioki, A. Houshang, C.-M. Hu, H. Huebl, M. Huth, E. Iacocca, M. B. Jungfleisch, G. N. Kakazei, A. Khitun, R. Khymyn, T. Kikkawa, M. Kläui, O. Klein, J. W. Kłos, S. Knauer, S. Koraltan, M. Kostylev, M. Krawczyk, I. N. Krivorotov, V. V. Kruglyak, D. Lachance-Quirion, S. Ladak, R. Lebrun, Y. Li, M. Lindner, R. Macêdo, S. Mayr, G. A. Melkov, S. Mieszczak, Y. Nakamura, H. T. Nembach, A. A. Nikitin, S. A. Nikitov, V. Novosad, J. A. Otalora, Y. Otani, A. Papp, B. Pigeau, P. Pirro, W. Porod, F. Porrati, H. Qin, B. Rana, T. Reimann, F. Riente, O. Romero-Isart, A. Ross, A. V. Sadovnikov, A. R. Safin, E. Saitoh, G. Schmidt, H. Schultheiss, K. Schultheiss, A. A. Serga, S. Sharma, J. M. Shaw, D. Suess, O. Surzhenko, K. Szulc, T. Taniguchi, M. Urbanek, K. Usami, A. B. Ustinov, T. Van der Sar, S. van Dijken, V. I. Vasyuchka, R. Verba, S. V. Kusminskiy, Q. Wang, M. Weides, M. Weiler, S. Wintz, S. P. Wolski, X. Zhang
IEEE Trans. Magn. 58, 0800172 (2022)
289. Observation of magnetic droplets in magnetic tunnel junctions
K. Shi, W. Cai, S. Jiang, D. Zhu, K. Cao, Z. Guo, J. Wei, A. Du, Z. Li, Y. Huang, J. Yin, J. Åkerman, and W Zhao
Sci. China Phys. Mech. Astron. 65, 227511 (2022)
288. Phase-Binarized Spin Hall Nano-Oscillator Arrays: Towards Spin Hall Ising Machines
A. Houshang, M. Zahedinejad, S. Muralidhar, J. Chęciński, R. Khymyn, M. Rajabali, H. Fular, A. A. Awad, M. Dvornik, and J. Åkerman
Phys. Rev. Appl. 17, 014003 (2022)
287. Femtosecond laser comb driven perpendicular standing spin waves
A. A. Awad, S. Muralidhar, A. Alemán, R. Khymyn, D. Hanstorp, and J. Åkerman
Appl. Phys. Lett. 120, 012405 (2022)
286. Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic computing
M. Zahedinejad, H. Fulara, R. Khymyn, A. Houshang, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, and J. Åkerman
Nature Materials 21, 81 (2022)
285. Fabrication of voltage-gated spin Hall nano-oscillators
A. Kumar, M. Rajabali, V. H. González, M. Zahedinejad, A. Houshang, and J. Åkerman
Nanoscale 14, 1432 (2022)
Publications in 2021 (12 papers)
284. Impact of Random Grain Structure on Spin-Hall Nano-Oscillator Modal Stability
C. C. M. Capriata, S. Jiang, J. Åkerman, and B. G. Malm
IEEE Electron. Dev. Lett. 43, 312 (2021)
283. Enhanced Modulation Bandwidth of a Magnetic Tunnel Junction-Based Spin Torque Nano-Oscillator Under Strong Current Modulation
R. Sharma, N. Sisoida, J. Åkerman, and P. K. Muduli
IEEE Electron. Dev. Lett. 42, 1886 (2021)
282. Measuring spin wave resonance in Ni100-xFex films: compositional and temperature dependence
M. Haidar, S. Isber, and J. Åkerman
J. Phys. D: Appl. Phys. 54, 445002 (2021)
281. Using the photoinduced L3 resonance shift in Fe and Ni as time reference for ultrafast experiments at low flux soft x-ray sources
S. Jana, S. Muralidhar, J. Åkerman, C. Schüssler-Langeheine, N. Pontius
Structural Dynamics 8, 044304 (2021)
280. Impact of intragrain spin wave reflections on nanocontact spin torque oscillators
A. J. Eklund, M. Dvornik, F. Qejvanaj, S. Jiang, S. Chung, J. Åkerman, and B. G. Malm
Phys. Rev. B 103, 214433 (2021)
279. Roadmap of Spin-Orbit Torques
Q. Shao, P. Li, L. Liu, H. Yang, S. Fukami, A. Razavi, H. Wu, K. Wang, F. Freimuth, Y. Mokrousov, M. D. Stiles, S. Emori, A. Hoffmann, J. Åkerman, K. Roy, J.-P. Wang, S.-H. Yang, K. Garello, W. Zhang
IEEE Trans. Magn. 57, 800439 (2021)
278. Ultrafast Ising Machines using spin torque nano-oscillators
D. I. Albertsson, M. Zahedinejad, A. Houshang, R. Khymyn, J. Åkerman, and A. Rusu
Appl. Phys. Lett. 118, 112404 (2021)
277. Brillouin light scattering investigations of films and magnetic tunnel junctions with perpendicular magnetic anisotropy at the CoFeB-MgO interface
S. Tacchi, F. Casoli, M. G. Pini, A. Rettori, M. Madami, J. Åkerman, T. T. Le, Q. N. Pham, H. L. Pham, T. N. Anh Nguyen
J. Phys. D: Appl. Phys. 54, 135005 (2021)
276. Femtosecond laser pulse driven caustic spin wave beams
S. Muralidhar, R. Khymyn, A. A. Awad, A. Alemán, D. Hanstorp, and J. Åkerman
Phys. Rev. Lett. 126, 037204 (2021)
275. Compositional effect on auto-oscillation behavior of Ni100-xFex/Pt spin Hall nano-oscillators
M. Haidar, H. Mazraati, P. Dürrenfeld, H. Fulara, M. Ranjbar, and J. Åkerman
Appl. Phys. Lett. 118, 012406 (2021)
274. Femtosecond laser driven prececssing magnetic gratings
G. Cao, S. Jiang, J. Åkerman, and J. Weissenrieder
Nanoscale 13, 3746 (2021)
273. Microwave Oscillators and Detectors Based on Magnetic Tunnel Junctions
P. K. Muduli, R. Sharma, D. Tiwari, N. Sisodia, A. Houshang, O. G. Heinonen, and J. Åkerman
Emerging Non-volatile Memory Technologies. Springer, Singapore, 2021.
C. C. M. Capriata, S. Jiang, J. Åkerman, and B. G. Malm
IEEE Electron. Dev. Lett. 43, 312 (2021)
283. Enhanced Modulation Bandwidth of a Magnetic Tunnel Junction-Based Spin Torque Nano-Oscillator Under Strong Current Modulation
R. Sharma, N. Sisoida, J. Åkerman, and P. K. Muduli
IEEE Electron. Dev. Lett. 42, 1886 (2021)
282. Measuring spin wave resonance in Ni100-xFex films: compositional and temperature dependence
M. Haidar, S. Isber, and J. Åkerman
J. Phys. D: Appl. Phys. 54, 445002 (2021)
281. Using the photoinduced L3 resonance shift in Fe and Ni as time reference for ultrafast experiments at low flux soft x-ray sources
S. Jana, S. Muralidhar, J. Åkerman, C. Schüssler-Langeheine, N. Pontius
Structural Dynamics 8, 044304 (2021)
280. Impact of intragrain spin wave reflections on nanocontact spin torque oscillators
A. J. Eklund, M. Dvornik, F. Qejvanaj, S. Jiang, S. Chung, J. Åkerman, and B. G. Malm
Phys. Rev. B 103, 214433 (2021)
279. Roadmap of Spin-Orbit Torques
Q. Shao, P. Li, L. Liu, H. Yang, S. Fukami, A. Razavi, H. Wu, K. Wang, F. Freimuth, Y. Mokrousov, M. D. Stiles, S. Emori, A. Hoffmann, J. Åkerman, K. Roy, J.-P. Wang, S.-H. Yang, K. Garello, W. Zhang
IEEE Trans. Magn. 57, 800439 (2021)
278. Ultrafast Ising Machines using spin torque nano-oscillators
D. I. Albertsson, M. Zahedinejad, A. Houshang, R. Khymyn, J. Åkerman, and A. Rusu
Appl. Phys. Lett. 118, 112404 (2021)
277. Brillouin light scattering investigations of films and magnetic tunnel junctions with perpendicular magnetic anisotropy at the CoFeB-MgO interface
S. Tacchi, F. Casoli, M. G. Pini, A. Rettori, M. Madami, J. Åkerman, T. T. Le, Q. N. Pham, H. L. Pham, T. N. Anh Nguyen
J. Phys. D: Appl. Phys. 54, 135005 (2021)
276. Femtosecond laser pulse driven caustic spin wave beams
S. Muralidhar, R. Khymyn, A. A. Awad, A. Alemán, D. Hanstorp, and J. Åkerman
Phys. Rev. Lett. 126, 037204 (2021)
275. Compositional effect on auto-oscillation behavior of Ni100-xFex/Pt spin Hall nano-oscillators
M. Haidar, H. Mazraati, P. Dürrenfeld, H. Fulara, M. Ranjbar, and J. Åkerman
Appl. Phys. Lett. 118, 012406 (2021)
274. Femtosecond laser driven prececssing magnetic gratings
G. Cao, S. Jiang, J. Åkerman, and J. Weissenrieder
Nanoscale 13, 3746 (2021)
273. Microwave Oscillators and Detectors Based on Magnetic Tunnel Junctions
P. K. Muduli, R. Sharma, D. Tiwari, N. Sisodia, A. Houshang, O. G. Heinonen, and J. Åkerman
Emerging Non-volatile Memory Technologies. Springer, Singapore, 2021.
Publications in 2020 (16 papers)
272. Tuning Magnetic Droplets in Nanocontact Spin-Torque Oscillators Using Electric Fields
C. Zheng, M. Dvornik, C. Wang, D. Xiao, Y. Liu, Z. Zhang, Y. Zhou, H. Mazraati, M. Ahlberg, A. A. Awad, and J. Åkerman
Phys. Rev. Appl. 14, 054001 (2020)
271. Frequency comb enhanced Brillouin microscopy
A. Aleman, S. Muralidhar, A. A. Awad, J. Åkerman, and D. Hanstorp
Optics Express 28, 29540 (2020)
270. Giant voltage-controlled modulation of spin Hall nano-oscillator damping
H Fulara, M Zahedinejad, R Khymyn, M Dvornik, S Fukami, S Kanai, H. Ohno, and J. Åkerman
Nature Communications 11, 4006 (2020)
269. Opportunities and challenges for spintronics in the microelectronics industry
B. Dieny, I. L. Prejbeanu, K. Garello, P. Gambardella, P. Freitas, R. Lehndorff, W. Raberg, U. Ebels, S. O. Demokritov, J. Akerman, A. Deac, P. Pirro, C. Adelmann, A. Anane, A. V. Chumak, A. Hirohata, S. Mangin, S. O. Valenzuela, M. C. Onbaşlı, M. d’Aquino, G. Prenat, G. Finocchio, L. Lopez-Diaz, R. Chantrell, O. Chubykalo-Fesenko, P. Bortolotti
Nature Electronics 3, 446 (2020)
268. A Magnetic Field-to-Digital Converter Employing a Spin-Torque Nano-Oscillator
D. I. Albertsson, J. Åkerman, and A. Rusu
IEEE Trans. Nanotechnol. 19, 565 (2020)
267. Correlation of magnetic and magnetoresistive properties of nanoporous Co/Pd thin multilayers fabricated on anodized TiO2 templates
T. N. A. Nguyen, J. Kasiuk, W.-B. Wu, J. Fedotova, J. Przewoźnik, C. Kapusta, O. Kupreeva, S. Lazarouk, T. T. H. Cao, T. T. T. Nguyen, H. M. Dinh, K. T. Do, T. H. Nguyen, H. K. Vu, D. L. Vu, J. Åkerman
Sci. Rep. 10, 10838 (2020)
266. Enhanced skyrmion motion via strip domain wall
X. Xing, J. Åkerman, and Y. Zhou
Phys. Rev. B 101, 214432 (2020)
265. Sustained coherent spin wave emission using frequency combs
S. Muralidhar, A. A. Awad, A. Alemán, R. Khymyn, M. Dvornik, D. Hanstorp, and J. Åkerman
Phys. Rev. B 101, 224423 (2020)
264. Influence of interfacial magnetic ordering and field-cooling effect on perpendicular exchange bias and magnetoresistance in nanoporous IrMn/[Co/Pd] films
W.-B. Wu, J. Kasiuk, T. N. A. Nguyen, J. Przewoźnik, J. Fedotova, C. Kapusta, O. Kupreeva, S. Lazarouk, K. T. Do, T. H. Nguyen, H. K. Vu, H. L. Pham, D. L. Vu, and J. Åkerman
J. Appl. Phys. 127, 223904 (2020)
263. Width dependent auto-oscillating properties of constriction based spin Hall nano-oscillators
A. A. Awad, A. Houshang, M. Zahedinejad, R. Khymyn, and J. Åkerman
Appl. Phys. Lett. 116, 232401 (2020)
262. Analysis of the linear relationship between asymmetry and magnetic moment at the M edge od 3d transition metals
S. Jana, R. S. Malik, Y. O. Kvashnin, I. L. M. Locht, R. Knut, R. Stefanuik, I. Di Marco, A. N. Yaresko, M. Ahlberg, J. Åkerman, R. Chimata, M. Battiato, J. Söderström, O. Eriksson, and O. Karis
Phys. Rev. Research 2, 013180 (2020)
261. Reduced spin torque nano-oscillator linewidth using He+ irradiation
S. Jiang, R. Khymyn, S. Chung, T. Q. Le, L. H. Diez, A. Houshang, M. Zahedinejad, D. Ravelosona, and J. Åkerman
Appl. Phys. Lett. 116, 072403 (2020)
260. Nonreciprocal spin pumping damping in asymmetric magnetic trilayers
Y. Pogoryelov, M. Pereiro, S. Jana, A. Kumar, S. Akansel, M. Ranjbar, D. Thonig, D. Primetzhofer, P. Svedlindh, J. Åkerman, O. Eriksson, O. Karis, and D. A. Arena
Phys. Rev. B 101, 054401 (2020)
259. Chiral excitations of magnetic droplet solitons driven by their own inertia
M. Mohseni, D. R. Rodrigues, M. Saghafi, S. Chung, M. Ahlberg, H. F. Yazdi, Q. Wang, S. A. H. Banuazizi, P. Pirro, J. Åkerman, and M. Mohseni
Phys. Rev. B 101, 020417 (2020)
258. Complex magnetic ordering in nanoporous [Co/Pd]5-IrMn multilayers with perpendicular magnetic anisotropy and its impact on magnetization reversal and magnetoresistance
W.-B. Wu, J. Kasiuk, T. N. Anh Nguyen, J. Fedotova, J. Przewoźnik, C. Kapusta, O. Kupreeva, S. Lazarouk, K. Tung Do, T. Huong Nguyen, H. Ky Vy, D. Lam Vu, and J. Åkerman
Phys. Chem. Chem. Phys. 22, 2661 (2020)
257. Two-dimensional mutually synchronized spin Hall nano-oscillator arrays for neuromorphic computing
M. Zahedinejad, A. A. Awad, S. Muralidhar, R. Khymyn, H. Fulara, H. Mazraati, M. Dvornik, and J. Åkerman
Nature Nanotechnology 15, 47 (2020)
C. Zheng, M. Dvornik, C. Wang, D. Xiao, Y. Liu, Z. Zhang, Y. Zhou, H. Mazraati, M. Ahlberg, A. A. Awad, and J. Åkerman
Phys. Rev. Appl. 14, 054001 (2020)
271. Frequency comb enhanced Brillouin microscopy
A. Aleman, S. Muralidhar, A. A. Awad, J. Åkerman, and D. Hanstorp
Optics Express 28, 29540 (2020)
270. Giant voltage-controlled modulation of spin Hall nano-oscillator damping
H Fulara, M Zahedinejad, R Khymyn, M Dvornik, S Fukami, S Kanai, H. Ohno, and J. Åkerman
Nature Communications 11, 4006 (2020)
269. Opportunities and challenges for spintronics in the microelectronics industry
B. Dieny, I. L. Prejbeanu, K. Garello, P. Gambardella, P. Freitas, R. Lehndorff, W. Raberg, U. Ebels, S. O. Demokritov, J. Akerman, A. Deac, P. Pirro, C. Adelmann, A. Anane, A. V. Chumak, A. Hirohata, S. Mangin, S. O. Valenzuela, M. C. Onbaşlı, M. d’Aquino, G. Prenat, G. Finocchio, L. Lopez-Diaz, R. Chantrell, O. Chubykalo-Fesenko, P. Bortolotti
Nature Electronics 3, 446 (2020)
268. A Magnetic Field-to-Digital Converter Employing a Spin-Torque Nano-Oscillator
D. I. Albertsson, J. Åkerman, and A. Rusu
IEEE Trans. Nanotechnol. 19, 565 (2020)
267. Correlation of magnetic and magnetoresistive properties of nanoporous Co/Pd thin multilayers fabricated on anodized TiO2 templates
T. N. A. Nguyen, J. Kasiuk, W.-B. Wu, J. Fedotova, J. Przewoźnik, C. Kapusta, O. Kupreeva, S. Lazarouk, T. T. H. Cao, T. T. T. Nguyen, H. M. Dinh, K. T. Do, T. H. Nguyen, H. K. Vu, D. L. Vu, J. Åkerman
Sci. Rep. 10, 10838 (2020)
266. Enhanced skyrmion motion via strip domain wall
X. Xing, J. Åkerman, and Y. Zhou
Phys. Rev. B 101, 214432 (2020)
265. Sustained coherent spin wave emission using frequency combs
S. Muralidhar, A. A. Awad, A. Alemán, R. Khymyn, M. Dvornik, D. Hanstorp, and J. Åkerman
Phys. Rev. B 101, 224423 (2020)
264. Influence of interfacial magnetic ordering and field-cooling effect on perpendicular exchange bias and magnetoresistance in nanoporous IrMn/[Co/Pd] films
W.-B. Wu, J. Kasiuk, T. N. A. Nguyen, J. Przewoźnik, J. Fedotova, C. Kapusta, O. Kupreeva, S. Lazarouk, K. T. Do, T. H. Nguyen, H. K. Vu, H. L. Pham, D. L. Vu, and J. Åkerman
J. Appl. Phys. 127, 223904 (2020)
263. Width dependent auto-oscillating properties of constriction based spin Hall nano-oscillators
A. A. Awad, A. Houshang, M. Zahedinejad, R. Khymyn, and J. Åkerman
Appl. Phys. Lett. 116, 232401 (2020)
262. Analysis of the linear relationship between asymmetry and magnetic moment at the M edge od 3d transition metals
S. Jana, R. S. Malik, Y. O. Kvashnin, I. L. M. Locht, R. Knut, R. Stefanuik, I. Di Marco, A. N. Yaresko, M. Ahlberg, J. Åkerman, R. Chimata, M. Battiato, J. Söderström, O. Eriksson, and O. Karis
Phys. Rev. Research 2, 013180 (2020)
261. Reduced spin torque nano-oscillator linewidth using He+ irradiation
S. Jiang, R. Khymyn, S. Chung, T. Q. Le, L. H. Diez, A. Houshang, M. Zahedinejad, D. Ravelosona, and J. Åkerman
Appl. Phys. Lett. 116, 072403 (2020)
260. Nonreciprocal spin pumping damping in asymmetric magnetic trilayers
Y. Pogoryelov, M. Pereiro, S. Jana, A. Kumar, S. Akansel, M. Ranjbar, D. Thonig, D. Primetzhofer, P. Svedlindh, J. Åkerman, O. Eriksson, O. Karis, and D. A. Arena
Phys. Rev. B 101, 054401 (2020)
259. Chiral excitations of magnetic droplet solitons driven by their own inertia
M. Mohseni, D. R. Rodrigues, M. Saghafi, S. Chung, M. Ahlberg, H. F. Yazdi, Q. Wang, S. A. H. Banuazizi, P. Pirro, J. Åkerman, and M. Mohseni
Phys. Rev. B 101, 020417 (2020)
258. Complex magnetic ordering in nanoporous [Co/Pd]5-IrMn multilayers with perpendicular magnetic anisotropy and its impact on magnetization reversal and magnetoresistance
W.-B. Wu, J. Kasiuk, T. N. Anh Nguyen, J. Fedotova, J. Przewoźnik, C. Kapusta, O. Kupreeva, S. Lazarouk, K. Tung Do, T. Huong Nguyen, H. Ky Vy, D. Lam Vu, and J. Åkerman
Phys. Chem. Chem. Phys. 22, 2661 (2020)
257. Two-dimensional mutually synchronized spin Hall nano-oscillator arrays for neuromorphic computing
M. Zahedinejad, A. A. Awad, S. Muralidhar, R. Khymyn, H. Fulara, H. Mazraati, M. Dvornik, and J. Åkerman
Nature Nanotechnology 15, 47 (2020)
Publications in 2019 (10 papers)
256. Tuning exchange-dominated spin-waves using lateral current spread in nanocontact spin-torque nano-oscillators
M. Fazlali, S. A. H. Banuazizi, M. Ahlberg, M. Dvornik, S. R. Sani, S. M. Mohseni, and J. Åkerman
J. Magn. Magn. Mater. 492, 165503 (2019)
255. Time-resolved imaging of magnetization dynamics in double nanocontact spin torque vortex oscillator devices
E. Burgos-Parra, P. S. Keatley, S. Sani, P. Durrenfeld, J. Åkerman, and R. J. Hicken
Phys. Rev. B 100, 134439 (2019)
254. Magnetodynamics in orthogonal nanocontact spin-torque nano-oscillators based on magnetic tunnel junctions
S. Jiang, M. Ahlberg, S. Chung, A. Houshang, R. Ferreira, P. P. Freitas, and J. Åkerman
Appl. Phys. Lett. 115, 152402 (2019)
253. Spin-orbit torque-driven propagating spin waves
H. Fulara, M. Zahedinejad, R. Khymyn, A. A. Awad, S. Muralidhar, M. Dvornik, and J. Åkerman
Science Advances 5, eaax8467 (2019)
252. Subterahertz ferrimagnetic spin-transfer torque oscillator
I. Lisenkov, R. Khymyn, J. Åkerman, N. X. Sun, B. A. Ivanov
Phys. Rev. B 100, 100409 (2019)
251. Compact macrospin-based model of three-terminal spin-Hall nano oscillators
D. I. Albertsson, M. Zahedinejad, J. Åkerman, S. Rodriguez, A. Rusu
IEEE Trans. Magn. 55, 4003808 (2019)
250. Magnetoresistive random access memory
J. Åkerman
Spintronics Handbook: Spin Transport and Magnetism (2019)
249. Magnetization reversal of antiferromagnetically coupled (Co/Ni) and (Co/Pt) multilayers
A. Al Subhi, R. Sbiaa, M. Ranjbar, and J. Åkerman
J. Magn. Magn. Mater. 479, 27 (2019)
248. A single layer spin-orbit torque nano-oscillator
M. Haidar, A. A. Awad, M. Dvornik, R. Khymyn, A. Houshang, and J. Åkerman
Nature Communications 10, 2362 (2019)
247. Enhanced perpendicular exchange bias in Co/Pd antidot arrays
T. N. Anh Nguyen, J. Fedotova, J. Kasiuk, W.-B. Wu, J. Przewoźnik, Cz. Kapusta, O. Kupreeva, S. Lazarouk, T. H. Thuy Trinh, K. Tung Do, H. Manh Do, D. Lam Vu, and J. Åkerman
J. Electron. Mater. 48, 1492 (2019)
M. Fazlali, S. A. H. Banuazizi, M. Ahlberg, M. Dvornik, S. R. Sani, S. M. Mohseni, and J. Åkerman
J. Magn. Magn. Mater. 492, 165503 (2019)
255. Time-resolved imaging of magnetization dynamics in double nanocontact spin torque vortex oscillator devices
E. Burgos-Parra, P. S. Keatley, S. Sani, P. Durrenfeld, J. Åkerman, and R. J. Hicken
Phys. Rev. B 100, 134439 (2019)
254. Magnetodynamics in orthogonal nanocontact spin-torque nano-oscillators based on magnetic tunnel junctions
S. Jiang, M. Ahlberg, S. Chung, A. Houshang, R. Ferreira, P. P. Freitas, and J. Åkerman
Appl. Phys. Lett. 115, 152402 (2019)
253. Spin-orbit torque-driven propagating spin waves
H. Fulara, M. Zahedinejad, R. Khymyn, A. A. Awad, S. Muralidhar, M. Dvornik, and J. Åkerman
Science Advances 5, eaax8467 (2019)
252. Subterahertz ferrimagnetic spin-transfer torque oscillator
I. Lisenkov, R. Khymyn, J. Åkerman, N. X. Sun, B. A. Ivanov
Phys. Rev. B 100, 100409 (2019)
251. Compact macrospin-based model of three-terminal spin-Hall nano oscillators
D. I. Albertsson, M. Zahedinejad, J. Åkerman, S. Rodriguez, A. Rusu
IEEE Trans. Magn. 55, 4003808 (2019)
250. Magnetoresistive random access memory
J. Åkerman
Spintronics Handbook: Spin Transport and Magnetism (2019)
249. Magnetization reversal of antiferromagnetically coupled (Co/Ni) and (Co/Pt) multilayers
A. Al Subhi, R. Sbiaa, M. Ranjbar, and J. Åkerman
J. Magn. Magn. Mater. 479, 27 (2019)
248. A single layer spin-orbit torque nano-oscillator
M. Haidar, A. A. Awad, M. Dvornik, R. Khymyn, A. Houshang, and J. Åkerman
Nature Communications 10, 2362 (2019)
247. Enhanced perpendicular exchange bias in Co/Pd antidot arrays
T. N. Anh Nguyen, J. Fedotova, J. Kasiuk, W.-B. Wu, J. Przewoźnik, Cz. Kapusta, O. Kupreeva, S. Lazarouk, T. H. Thuy Trinh, K. Tung Do, H. Manh Do, D. Lam Vu, and J. Åkerman
J. Electron. Mater. 48, 1492 (2019)
Publications in 2018 (20 papers)
246. Spatial mapping of torques within a spin Hall nano-oscillator
T. M. Spicer, P. S. Keatley, T. H. J. Loughran, M. Dvornik, A. A. Awad, P. Dürrenfeld, A. Houshang, M. Ranjbar, J. Åkerman, V. V. Kruglyak, R. J. Hicken
Phys. Rev. B 98, 214438 (2018)
245. Auto-oscillating spin-wave modes of constriction-based spin Hall nano-oscillators in weak in-plane fields
H. Mazraati, S. R. Etesami, S. A. H. Banuazizi, S. Chung, A. Houshang, A. A. Awad, M. Dvornik, and J. Åkerman
Phys. Rev. Applied 10, 054014 (2018)
244. Using magnetic droplet nucleation to determine the spin torque efficiency and asymmetry in Co_x(NiFe)_1-x thin films
S. Jiang, S. Chung, Q. Tuan Le, H. Mazraati, A. Houshang, and J. Åkerman
Phys. Rev. Applied 10, 054014 (2018)
243. Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
R. Khymyn, I. Lisenkov, J. Voorheis, O. Sulymenko, O. Prokopenko, V. Tiberkevich, J. Åkerman, and A. N. Slavin
Sci. Rep. 8, 15727 (2018)
242. Spin transfer torque driven higher-order propagating spin waves in nano-contact magnetic tunnel junctions
A. Houshang, R. Khymyn, H. Fulara, A. Gangwar, M. Haidar, S. R. Etesami, R. Ferreira, P. P. Freitas, M. Dvornik, R. K. Dumas, and J. Åkerman
Nature Communications 9, 4374 (2018)
241. Spin Transfer Torque Driven Magnetodynamical Solitons
J. Åkerman
In Topology in Magnetism, Ch. 11, Springer Series in Solid-State Sciences 192, 335-356 (2018)
240. Ultra-fast logic devices using artificial "neurons" based on antiferromagnetic pulse generators
O. Sulymenko, O. Prokopenko, I. Lisenkov, J. Åkerman, V. Tiberkevich, A. N. Slavin, and R. Khymyn
J. Appl. Phys. 124, 152115 (2018)
239. [Co/Ni] multilayers with robust post-annealing performance for spintronics device applications
S. Gupta, R. Sbiaa, M. Al Bahri, A. Ghosh, S. N. Piramanayagam, M. Ranjbar, and J. Åkerman
J. Phys. D: Appl. Phys. 51, 465002 (2018)
238. Improving the magnetodynamical properties of NiFe/Pt bilayers through Hf dusting
H. Mazraati, M. Zahedinejad, and J. Åkerman
Appl. Phys. Lett. 113, 092401 (2018)
237. Investigation of magnetic droplet solitons using x-ray holography with extended references
E. Burgos-Parra, N. Bukin, S. Sani, A. I. Figueroa, G. Beutier, M. Dupraz, S. Chung, P. Dürrenfeld, Q. Tuan Le, S. M. Mohseni, A. Houshang, S. A. Cavill, R. J. Hicken, J. Åkerman, G. van der Laan, and F. Y. Ogrin
Sci. Rep. 8, 11533 (2018)
236. Microwave probe stations with three-dimensional control of the magnetic field to study high-frequency dynamics in nanoscale devices
S. A. H. Banuazizi and J. Åkerman
Rev. Sci. Instr. 89, 064701 (2018)
235. Tuning the magnetodynamic properties of all-perpendicular spin valves using He+ irradiation
S. Jiang, S. Chung, L. Herrera Diez, T. Quang Le, F. Magnusson, D. Ravelosona, and J. Åkerman
AIP Advances 8, 065309 (2018)
234. Direct observation of Zhang-Li torque expansion of magnetic droplet solitons
S. Chung, Q. Tuan Le, M. Ahlberg, M. Weigand, I. Bykova, A. A. Awad, H. Mazraati, A. Houshang, S. Jiang, T. N. Anh Nguyen, E. Göring, G. Schütz, J. Gräfe, and J. Åkerman
Phys. Rev. Lett. 120, 217204 (2018); see also arXiv:1707.01595
233. Magnetic droplet soliton nucleation in oblique fields
M. Mohseni, M. Hamdi, H. F. Yazdi, S. A. H. Banuazizi, S. Chung, S. R. Sani, J. Åkerman, and M. Mohseni
Phys. Rev. B 97, 184402 (2018)
232. CMOS compatible W/CoFeB/MgO spin Hall nano-oscillators with wide frequency tunability
M. Zahedinejad, H. Mazraati, H. Fulara, J. Yue, S. Jiang, A. A. Awad, and J. Åkerman
Appl. Phys. Lett. 112, 022406 (2018)
231. Magnetic graphene/Ni-nano-crystal hybrid for small field magnetoresistive effect synthesized via electrochemical exfoliation/deposition technique
Z. Sheykhifard, S. Majid Mohseni, B. Tork, M. R. Hajiali, L. Jamilpanah, B. Rahmati, F. Haddadi, M. Hamdi, S. Morteza Mohseni, M. Mohammadbeigi, A. Ghaderi, S. Erfanifam, M. Dashtdar, F. Feghhi, N. Ansari, S. Pakdel, M. Pourfath, A. Hosseinzadegan, M. Bahreini, S. H. Tavassoli, M. Ranjbar, S. A. H. Banuazizi, S. Chung, J. Åkerman, N. Nikkam, A. Sohrabi, S. E. Roozmeh
J. Mat. Sci.: Materials in Electronics 29, 4171 (2018)
230. Origin of magnetization auto-oscillations in constriction-based spin Hall nano-oscillators
M. Dvornik, A. A. Awad, and J. Åkerman
Phys. Rev. Applied 9, 014017 (2018)
229. Impact of the Oersted field on droplet nucleation boundaries
S. Jiang, S. R. Etesami, S. Chung, Q. T. Le, A. Houshang, and J. Åkerman
IEEE Magn. Lett. 9, 3104304 (2018)
228. Effect of flattened surface morphology of anodized aluminum oxide templates on the magnetic properties of nanoporous Co/Pt and Co/Pd thin multilayered films
T. N. Anh Nguyen, J. Fedotova, J. Kasiuk, V. Bayev, O. Kupreeva, S. Lazarouk, D. H. Manh, D. L. Wu, S. Chung, J. Åkerman, V. Altynov, and A. Maximenko
Appl. Surf. Sci. 427, Part B, 649 (2018)
227. Influence of MgO barrier quality on spin-transfer torque in magnetic tunnel junctions
D. Tiwari, R. Sharma, O. G. Heinonen, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 112, 022406 (2018)
T. M. Spicer, P. S. Keatley, T. H. J. Loughran, M. Dvornik, A. A. Awad, P. Dürrenfeld, A. Houshang, M. Ranjbar, J. Åkerman, V. V. Kruglyak, R. J. Hicken
Phys. Rev. B 98, 214438 (2018)
245. Auto-oscillating spin-wave modes of constriction-based spin Hall nano-oscillators in weak in-plane fields
H. Mazraati, S. R. Etesami, S. A. H. Banuazizi, S. Chung, A. Houshang, A. A. Awad, M. Dvornik, and J. Åkerman
Phys. Rev. Applied 10, 054014 (2018)
244. Using magnetic droplet nucleation to determine the spin torque efficiency and asymmetry in Co_x(NiFe)_1-x thin films
S. Jiang, S. Chung, Q. Tuan Le, H. Mazraati, A. Houshang, and J. Åkerman
Phys. Rev. Applied 10, 054014 (2018)
243. Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
R. Khymyn, I. Lisenkov, J. Voorheis, O. Sulymenko, O. Prokopenko, V. Tiberkevich, J. Åkerman, and A. N. Slavin
Sci. Rep. 8, 15727 (2018)
242. Spin transfer torque driven higher-order propagating spin waves in nano-contact magnetic tunnel junctions
A. Houshang, R. Khymyn, H. Fulara, A. Gangwar, M. Haidar, S. R. Etesami, R. Ferreira, P. P. Freitas, M. Dvornik, R. K. Dumas, and J. Åkerman
Nature Communications 9, 4374 (2018)
241. Spin Transfer Torque Driven Magnetodynamical Solitons
J. Åkerman
In Topology in Magnetism, Ch. 11, Springer Series in Solid-State Sciences 192, 335-356 (2018)
240. Ultra-fast logic devices using artificial "neurons" based on antiferromagnetic pulse generators
O. Sulymenko, O. Prokopenko, I. Lisenkov, J. Åkerman, V. Tiberkevich, A. N. Slavin, and R. Khymyn
J. Appl. Phys. 124, 152115 (2018)
239. [Co/Ni] multilayers with robust post-annealing performance for spintronics device applications
S. Gupta, R. Sbiaa, M. Al Bahri, A. Ghosh, S. N. Piramanayagam, M. Ranjbar, and J. Åkerman
J. Phys. D: Appl. Phys. 51, 465002 (2018)
238. Improving the magnetodynamical properties of NiFe/Pt bilayers through Hf dusting
H. Mazraati, M. Zahedinejad, and J. Åkerman
Appl. Phys. Lett. 113, 092401 (2018)
237. Investigation of magnetic droplet solitons using x-ray holography with extended references
E. Burgos-Parra, N. Bukin, S. Sani, A. I. Figueroa, G. Beutier, M. Dupraz, S. Chung, P. Dürrenfeld, Q. Tuan Le, S. M. Mohseni, A. Houshang, S. A. Cavill, R. J. Hicken, J. Åkerman, G. van der Laan, and F. Y. Ogrin
Sci. Rep. 8, 11533 (2018)
236. Microwave probe stations with three-dimensional control of the magnetic field to study high-frequency dynamics in nanoscale devices
S. A. H. Banuazizi and J. Åkerman
Rev. Sci. Instr. 89, 064701 (2018)
235. Tuning the magnetodynamic properties of all-perpendicular spin valves using He+ irradiation
S. Jiang, S. Chung, L. Herrera Diez, T. Quang Le, F. Magnusson, D. Ravelosona, and J. Åkerman
AIP Advances 8, 065309 (2018)
234. Direct observation of Zhang-Li torque expansion of magnetic droplet solitons
S. Chung, Q. Tuan Le, M. Ahlberg, M. Weigand, I. Bykova, A. A. Awad, H. Mazraati, A. Houshang, S. Jiang, T. N. Anh Nguyen, E. Göring, G. Schütz, J. Gräfe, and J. Åkerman
Phys. Rev. Lett. 120, 217204 (2018); see also arXiv:1707.01595
233. Magnetic droplet soliton nucleation in oblique fields
M. Mohseni, M. Hamdi, H. F. Yazdi, S. A. H. Banuazizi, S. Chung, S. R. Sani, J. Åkerman, and M. Mohseni
Phys. Rev. B 97, 184402 (2018)
232. CMOS compatible W/CoFeB/MgO spin Hall nano-oscillators with wide frequency tunability
M. Zahedinejad, H. Mazraati, H. Fulara, J. Yue, S. Jiang, A. A. Awad, and J. Åkerman
Appl. Phys. Lett. 112, 022406 (2018)
231. Magnetic graphene/Ni-nano-crystal hybrid for small field magnetoresistive effect synthesized via electrochemical exfoliation/deposition technique
Z. Sheykhifard, S. Majid Mohseni, B. Tork, M. R. Hajiali, L. Jamilpanah, B. Rahmati, F. Haddadi, M. Hamdi, S. Morteza Mohseni, M. Mohammadbeigi, A. Ghaderi, S. Erfanifam, M. Dashtdar, F. Feghhi, N. Ansari, S. Pakdel, M. Pourfath, A. Hosseinzadegan, M. Bahreini, S. H. Tavassoli, M. Ranjbar, S. A. H. Banuazizi, S. Chung, J. Åkerman, N. Nikkam, A. Sohrabi, S. E. Roozmeh
J. Mat. Sci.: Materials in Electronics 29, 4171 (2018)
230. Origin of magnetization auto-oscillations in constriction-based spin Hall nano-oscillators
M. Dvornik, A. A. Awad, and J. Åkerman
Phys. Rev. Applied 9, 014017 (2018)
229. Impact of the Oersted field on droplet nucleation boundaries
S. Jiang, S. R. Etesami, S. Chung, Q. T. Le, A. Houshang, and J. Åkerman
IEEE Magn. Lett. 9, 3104304 (2018)
228. Effect of flattened surface morphology of anodized aluminum oxide templates on the magnetic properties of nanoporous Co/Pt and Co/Pd thin multilayered films
T. N. Anh Nguyen, J. Fedotova, J. Kasiuk, V. Bayev, O. Kupreeva, S. Lazarouk, D. H. Manh, D. L. Wu, S. Chung, J. Åkerman, V. Altynov, and A. Maximenko
Appl. Surf. Sci. 427, Part B, 649 (2018)
227. Influence of MgO barrier quality on spin-transfer torque in magnetic tunnel junctions
D. Tiwari, R. Sharma, O. G. Heinonen, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 112, 022406 (2018)
Publications in 2017 (17 papers)
226. Antidamping spin-orbit torques in epitaxial-Py(100)/beta-Ta
D. Tiwari, N. Behera, A. Kumar, P. Dürrenfeld, S. Chaudhary, D. K. Pandya, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 111, 232407 (2017)
225. A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator
R. Sharma, N. Sisodia, E. Iacocca, A. A. Awad, J. Åkerman, and P. K. Muduli,
Sci. Rep. 7, 13422 (2017)
224. Controlled skyrmion nucleation in extended magnetic layers using a nanocontact geometry
P. Dürrenfeld, Y. Xu, J. Åkerman, and Y. Zhou
Phys. Rev. B 96, 054430 (2017)
223. Time-Domain stability of parametric synchronization in a spin-torque nano-oscillator based on a magnetic tunnel junction
R. Sharma, N. Sisodia, P. Dürrenfeld, J. Åkerman, and P. K. Muduli,
Phys. Rev. B 96, 024427 (2017)
222. Anisotropy constant and exchange coupling strength of perpendicularly magnetized CoFeB/Pd multilayers and exchange springs
A. F. Franco, C. Gonzalez-Fuentes, J. Åkerman, and C. Garcia
Phys. Rev. B 95, 144417 (2017)
221. Ni thickness influence on magnetic properties of (Co/Ni/Co/Pd) multilayers with perpendicular magnetic anisotropy
R. Sbiaa, I. A. Al-Omari, M. Al Bahri, R. P. Kharel, M. Ranjbar, J. Åkerman, and D. J. Sellmyer
J. Magn. Magn. Mater. 441, 585 (2017)
220. Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Hall Torque
X. Xing, P. W. T. Pong, J. Åkerman, and Y. Zhou
Phys. Rev. Appl. 7, 054016 (2017)
219. Interfacial Dzyaloshinskii-Moriya interaction in Pt/CoFeB films: Effect of the heavy-metal thickness
S. Tacchi, R. E. Troncoso, M. Ahlberg, G. Gubbiotti, M. Madami, J. Åkerman, and P. Landeros
Phys. Rev. Lett. 118, 147201 (2017); see also arXiv:1604.02626
218. Imaging magnetisation dynamics in nano-contact spin-torque vortex oscillators exhibiting gyrotropic mode splitting
P. Keatley, S. R. Sani, G. Hrkac, S. Mohseni, P. Dürrenfeld, J. Åkerman, and R. Hicken
J. Phys. D: Appl. Phys. 50, 164003 (2017)
217. Phase-locking of multiple magnetic droplets by a microwave magnetic field
Chengjje Wang, Dun Xiao, Yan Zhou, J. Åkerman, and Yaowen Liu
AIP Advances 7, 056019 (2017)
216. Current modulation of nanoconstriction spin Hall nano-oscillators
M. Zahedinejad, A. A. Awad, P. Dürrenfeld, A. Houshang, Y. Yin, P. K. Muduli, and J. Åkerman
IEEE Magn. Lett. 8, 3104804 (2017)
215. Long-rang mutual synchronization of spin Hall nano-oscillators
A. A. Awad, P. Dürrenfeld, A. Houshang, M. Dvornik, E. Iacocca, R. K. Dumas, and J. Åkerman
Nature Physics 13, 292 (2017)
214. Spin transfer torque ferromagnetic resonance induced spin pumping in the Fe/Pd bilayer system
A. Kumar, S. Akansel, H. Stopfel, M. Fazlali, J. Åkerman, R. Brucas, and P. Svedlindh
Phys. Rev. B 95, 064406 (2017)
213. Order of magnitude improvement of nano-contact spin torque oscillator performance
S. A. H. Banuazizi, S. R. Sani, A. Eklund, M. M. Naiini, S. M. Mohseni, S. Chung, P. Dürrenfeld, B. G. Malm, and J. Åkerman
Nanoscale 9, 1896 (2017)
212. Parametric Auto-Excitation of Magnetic Droplet Soliton Perimeter Modes
D. Xiao, V. Tiberkevich, Y. H. Liu, Y. W. Liu, S. M. Mohseni, S. Chung, M. Ahlberg, A. N. Slavin, J. Åkerman, and Yan Zhou
Phys. Rev. B 95, 024106 (2017)
211. A 20 nm spin Hall nano-oscillator
P. Dürrenfeld, A. A. Awad, A. Houshang, R. K. Dumas, and J. Åkerman
Nanoscale 9, 1285 (2017)
210. Ferromagnetic and Spin-Wave Resonance on Heavy-Metal-Dopet Permalloy Films: Temperature Effects
Y. Yinm, M. Ahlberg, P. Dürrenfeld, Y. Zhai, R. K. Dumas, and J. Åkerman
IEEE Magn. Lett. 8, 3502604 (2017)
D. Tiwari, N. Behera, A. Kumar, P. Dürrenfeld, S. Chaudhary, D. K. Pandya, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 111, 232407 (2017)
225. A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator
R. Sharma, N. Sisodia, E. Iacocca, A. A. Awad, J. Åkerman, and P. K. Muduli,
Sci. Rep. 7, 13422 (2017)
224. Controlled skyrmion nucleation in extended magnetic layers using a nanocontact geometry
P. Dürrenfeld, Y. Xu, J. Åkerman, and Y. Zhou
Phys. Rev. B 96, 054430 (2017)
223. Time-Domain stability of parametric synchronization in a spin-torque nano-oscillator based on a magnetic tunnel junction
R. Sharma, N. Sisodia, P. Dürrenfeld, J. Åkerman, and P. K. Muduli,
Phys. Rev. B 96, 024427 (2017)
222. Anisotropy constant and exchange coupling strength of perpendicularly magnetized CoFeB/Pd multilayers and exchange springs
A. F. Franco, C. Gonzalez-Fuentes, J. Åkerman, and C. Garcia
Phys. Rev. B 95, 144417 (2017)
221. Ni thickness influence on magnetic properties of (Co/Ni/Co/Pd) multilayers with perpendicular magnetic anisotropy
R. Sbiaa, I. A. Al-Omari, M. Al Bahri, R. P. Kharel, M. Ranjbar, J. Åkerman, and D. J. Sellmyer
J. Magn. Magn. Mater. 441, 585 (2017)
220. Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Hall Torque
X. Xing, P. W. T. Pong, J. Åkerman, and Y. Zhou
Phys. Rev. Appl. 7, 054016 (2017)
219. Interfacial Dzyaloshinskii-Moriya interaction in Pt/CoFeB films: Effect of the heavy-metal thickness
S. Tacchi, R. E. Troncoso, M. Ahlberg, G. Gubbiotti, M. Madami, J. Åkerman, and P. Landeros
Phys. Rev. Lett. 118, 147201 (2017); see also arXiv:1604.02626
218. Imaging magnetisation dynamics in nano-contact spin-torque vortex oscillators exhibiting gyrotropic mode splitting
P. Keatley, S. R. Sani, G. Hrkac, S. Mohseni, P. Dürrenfeld, J. Åkerman, and R. Hicken
J. Phys. D: Appl. Phys. 50, 164003 (2017)
217. Phase-locking of multiple magnetic droplets by a microwave magnetic field
Chengjje Wang, Dun Xiao, Yan Zhou, J. Åkerman, and Yaowen Liu
AIP Advances 7, 056019 (2017)
216. Current modulation of nanoconstriction spin Hall nano-oscillators
M. Zahedinejad, A. A. Awad, P. Dürrenfeld, A. Houshang, Y. Yin, P. K. Muduli, and J. Åkerman
IEEE Magn. Lett. 8, 3104804 (2017)
215. Long-rang mutual synchronization of spin Hall nano-oscillators
A. A. Awad, P. Dürrenfeld, A. Houshang, M. Dvornik, E. Iacocca, R. K. Dumas, and J. Åkerman
Nature Physics 13, 292 (2017)
214. Spin transfer torque ferromagnetic resonance induced spin pumping in the Fe/Pd bilayer system
A. Kumar, S. Akansel, H. Stopfel, M. Fazlali, J. Åkerman, R. Brucas, and P. Svedlindh
Phys. Rev. B 95, 064406 (2017)
213. Order of magnitude improvement of nano-contact spin torque oscillator performance
S. A. H. Banuazizi, S. R. Sani, A. Eklund, M. M. Naiini, S. M. Mohseni, S. Chung, P. Dürrenfeld, B. G. Malm, and J. Åkerman
Nanoscale 9, 1896 (2017)
212. Parametric Auto-Excitation of Magnetic Droplet Soliton Perimeter Modes
D. Xiao, V. Tiberkevich, Y. H. Liu, Y. W. Liu, S. M. Mohseni, S. Chung, M. Ahlberg, A. N. Slavin, J. Åkerman, and Yan Zhou
Phys. Rev. B 95, 024106 (2017)
211. A 20 nm spin Hall nano-oscillator
P. Dürrenfeld, A. A. Awad, A. Houshang, R. K. Dumas, and J. Åkerman
Nanoscale 9, 1285 (2017)
210. Ferromagnetic and Spin-Wave Resonance on Heavy-Metal-Dopet Permalloy Films: Temperature Effects
Y. Yinm, M. Ahlberg, P. Dürrenfeld, Y. Zhai, R. K. Dumas, and J. Åkerman
IEEE Magn. Lett. 8, 3502604 (2017)
Publications in 2016 (18 papers)
209. Low operational current spin Hall nano-oscillators based on NiFe/W bilayers
H. Mazraati, S. Chung, A. Houshang, M. Dvornik, L. Piazza, F. Qejvanaj, S. Jiang, T. Q. Le, J. Weissenrieder, and J. Åkerman
Appl. Phys. Lett. 109, 242402 (2016)
208. Low-current, narrow-linewidth microwave signal generation in NiMnSb based single-layer nanocontact spin-torque oscillators
P. Dürrenfeld, F. Gerhard, S. M. Mohseni, M. Ranjbar, S. R. Sani, S. Chung, C. Gould, L. W. Molenkamp, and J. Åkerman
Appl. Phys. Lett. 109, 222403 (2016)
207. Controlling Gilbert damping in a YIG film using non-local spin currents
M. Haidar, P. Dürrenfeld, M. Ranjbar, M. Balinsky, M. Fazlali, M. Dvornik, R. K. Dumas, S. Khartsev, and J. Åkerman
Phys. Rev. B 94,180409(R) (2016)
206. Free and fixed layer magnetization modes in all-perpendicular magnetic tunnel junction pillars measured by ST-FMR
H. Mazraati, T. Le, A. A. Awad, S. Chung, S. Ikeda, H. Ohno, and J. Åkerman
Phys. Rev. B 94, 104428 (2016)
205. Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy
R. Sbiaa, J. Shaw, H. Nembach, M. Al Bahri, M. Ranjbar, J. Åkerman, and S. Piramanayagam
J. Phys. D 49, 425002 (2016)
204. Magnetostatically driven domain replication in Ni/Co perpendicular pseudo-spin-valve nano-structures
S. M. Mohseni, M. Hamdi, S. Chung, S. R. Sani, and J. Åkerman
J. Phys. D 49, 415004 (2016)
203. All-Optical Study of Tunable Ultrafast Dynamics in [Co/Pd]-NiFe Systems: The Role of Spin-Twist Structure on Gilbert Damping
C. Banerjee, S. Pal, M. Ahlberg, T. N. Anh Nguyen, J. Åkerman, and A. Barman
RSC Adv. 6, 80168 (2016); see also arXiv:1604.02998
202. Super-harmonic injection locking of a nano-contact spin-torque vortex oscillator
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, P. Dürrenfeld, J. Åkerman, and R. J. Hicken
Phys. Rev. B 94, 094404 (2016)
201. Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy
A. F. Franco, C. Gonzalez-Fuentes, R. Morales, C. A. Ross, R. K. Dumas, J. Åkerman, C. Garcia
Phys. Rev. B 94, 064431 (2016)
200. Direct observation of magnetization dynamics generated by nanocontact spin-torque vortex oscillators
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, P. Dürrenfeld, T. H. J. Loughran, J. Åkerman, and R. J. Hicken
Phys. Rev. B 94, 060402(R) (2016)
199. Spin-Torque and Spin-Hall Nano-Oscillators
T. Chen, R. K. Dumas, A. Eklund, P. K. Muduli, A. Houshang, A. A. Awad, P. Dürrenfeld, B. G. Malm, A. Rusu, and J. Åkerman
Proceedings of the IEEE, early access (2016); see also arXiv:1512.03162
198. Homodyne-detected ferromagnetic resonance of in-plane magnetized nano-contacts: composite spin wave resonances and their excitation mechanism
M. Fazlali, M. Dvornik, E. Iacocca, P. Dürrenfeld, M. Haidar, J. Åkerman, and R. K. Dumas
Phys. Rev. B 93, 134427 (2016); see also arXiv:1604.01389
197. Holographic magnetic imaging of single layer nano-contact spin transfer oscillators
E. O. Burgos Parra, N. Bukin, M. Dupraz, G. Beutier, S. R. Sani, H. Popescu, S. A. Cavill, J. Åkerman, N. Jaouen, P. S. Keatley, R. J. Hicken, G. van der Laan, and F. Y. Ogrin
IEEE Trans. Magn. 52, 6500304 (2016)
196. Modulation of the spectral characteristics of a nano-contact spin torque oscillator via spin waves in a nearby YIG film
M. Balinsky, M. Haidar, M. Ranjbar, P. Dürrenfeld, A. Houshang, A. Slavin, and J. Åkerman
IEEE Magn. Lett. 7, 3101704 (2016)
195. Magnetic droplet nucleation boundary in orthogonal spin-torque nano-oscillators
S. Chung, A. Eklund, E. Iacocca, S. M. Mohseni, S. R. Sani, L. Bookman, M. A. Hoefer, R. K. Dumas, and J. Åkerman
Nature Communications 7, 11209 (2016)
194. Merging droplets in double nano-contact spin torque oscillators
D. Xiao, Y. Liu, Y. Zhou, S. M. Mohseni, S. Chung, and J. Åkerman
Phys. Rev. B 93, 094431 (2016)
193. Spin-wave-beam driven synchronization of nanocontact spin-torque oscillators
A. Houshang, E. Iacocca, P. Dürrenfeld, S. R. Sani, J. Åkerman, and R. K. Dumas
Nature Nanotechnology 11, 280 (2016)
192. Enhancement of spin-torque diode sensitivity in a magnetic tunnel junction by parametric synchronization
D. Tiwari, N. Sisodia, R. Sharma, P. Dürrenfeld, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett 108, 082402 (2016)
H. Mazraati, S. Chung, A. Houshang, M. Dvornik, L. Piazza, F. Qejvanaj, S. Jiang, T. Q. Le, J. Weissenrieder, and J. Åkerman
Appl. Phys. Lett. 109, 242402 (2016)
208. Low-current, narrow-linewidth microwave signal generation in NiMnSb based single-layer nanocontact spin-torque oscillators
P. Dürrenfeld, F. Gerhard, S. M. Mohseni, M. Ranjbar, S. R. Sani, S. Chung, C. Gould, L. W. Molenkamp, and J. Åkerman
Appl. Phys. Lett. 109, 222403 (2016)
207. Controlling Gilbert damping in a YIG film using non-local spin currents
M. Haidar, P. Dürrenfeld, M. Ranjbar, M. Balinsky, M. Fazlali, M. Dvornik, R. K. Dumas, S. Khartsev, and J. Åkerman
Phys. Rev. B 94,180409(R) (2016)
206. Free and fixed layer magnetization modes in all-perpendicular magnetic tunnel junction pillars measured by ST-FMR
H. Mazraati, T. Le, A. A. Awad, S. Chung, S. Ikeda, H. Ohno, and J. Åkerman
Phys. Rev. B 94, 104428 (2016)
205. Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy
R. Sbiaa, J. Shaw, H. Nembach, M. Al Bahri, M. Ranjbar, J. Åkerman, and S. Piramanayagam
J. Phys. D 49, 425002 (2016)
204. Magnetostatically driven domain replication in Ni/Co perpendicular pseudo-spin-valve nano-structures
S. M. Mohseni, M. Hamdi, S. Chung, S. R. Sani, and J. Åkerman
J. Phys. D 49, 415004 (2016)
203. All-Optical Study of Tunable Ultrafast Dynamics in [Co/Pd]-NiFe Systems: The Role of Spin-Twist Structure on Gilbert Damping
C. Banerjee, S. Pal, M. Ahlberg, T. N. Anh Nguyen, J. Åkerman, and A. Barman
RSC Adv. 6, 80168 (2016); see also arXiv:1604.02998
202. Super-harmonic injection locking of a nano-contact spin-torque vortex oscillator
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, P. Dürrenfeld, J. Åkerman, and R. J. Hicken
Phys. Rev. B 94, 094404 (2016)
201. Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy
A. F. Franco, C. Gonzalez-Fuentes, R. Morales, C. A. Ross, R. K. Dumas, J. Åkerman, C. Garcia
Phys. Rev. B 94, 064431 (2016)
200. Direct observation of magnetization dynamics generated by nanocontact spin-torque vortex oscillators
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, P. Dürrenfeld, T. H. J. Loughran, J. Åkerman, and R. J. Hicken
Phys. Rev. B 94, 060402(R) (2016)
199. Spin-Torque and Spin-Hall Nano-Oscillators
T. Chen, R. K. Dumas, A. Eklund, P. K. Muduli, A. Houshang, A. A. Awad, P. Dürrenfeld, B. G. Malm, A. Rusu, and J. Åkerman
Proceedings of the IEEE, early access (2016); see also arXiv:1512.03162
198. Homodyne-detected ferromagnetic resonance of in-plane magnetized nano-contacts: composite spin wave resonances and their excitation mechanism
M. Fazlali, M. Dvornik, E. Iacocca, P. Dürrenfeld, M. Haidar, J. Åkerman, and R. K. Dumas
Phys. Rev. B 93, 134427 (2016); see also arXiv:1604.01389
197. Holographic magnetic imaging of single layer nano-contact spin transfer oscillators
E. O. Burgos Parra, N. Bukin, M. Dupraz, G. Beutier, S. R. Sani, H. Popescu, S. A. Cavill, J. Åkerman, N. Jaouen, P. S. Keatley, R. J. Hicken, G. van der Laan, and F. Y. Ogrin
IEEE Trans. Magn. 52, 6500304 (2016)
196. Modulation of the spectral characteristics of a nano-contact spin torque oscillator via spin waves in a nearby YIG film
M. Balinsky, M. Haidar, M. Ranjbar, P. Dürrenfeld, A. Houshang, A. Slavin, and J. Åkerman
IEEE Magn. Lett. 7, 3101704 (2016)
195. Magnetic droplet nucleation boundary in orthogonal spin-torque nano-oscillators
S. Chung, A. Eklund, E. Iacocca, S. M. Mohseni, S. R. Sani, L. Bookman, M. A. Hoefer, R. K. Dumas, and J. Åkerman
Nature Communications 7, 11209 (2016)
194. Merging droplets in double nano-contact spin torque oscillators
D. Xiao, Y. Liu, Y. Zhou, S. M. Mohseni, S. Chung, and J. Åkerman
Phys. Rev. B 93, 094431 (2016)
193. Spin-wave-beam driven synchronization of nanocontact spin-torque oscillators
A. Houshang, E. Iacocca, P. Dürrenfeld, S. R. Sani, J. Åkerman, and R. K. Dumas
Nature Nanotechnology 11, 280 (2016)
192. Enhancement of spin-torque diode sensitivity in a magnetic tunnel junction by parametric synchronization
D. Tiwari, N. Sisodia, R. Sharma, P. Dürrenfeld, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett 108, 082402 (2016)
Publications in 2015 (26 papers)
191. Monte Carlo modeling of mixed-anisotropy [Co/Ni]2/NiFe multilayers
R. Escobar, L. Tryputen, S. Castillo-Sepúlveda, D. Altbir, S. Chung, T. N. Anh Nguyen, S. M. Mohseni, J. Åkerman, and C. Ross.
IEEE Magn. Lett. 7, 4101205 (2015)
190. Tunable damping, saturation magnetization, and exchange stiffness of half-Heusler NiMnSb thin films
P. Dürrenfeld, F. Gerhard, J. Chico, R. K. Dumas, M. Ranjbar, A. Bergman, L. Bergqvist, A. Delin, C. Gould, L. W. Molenkamp, and J. Åkerman
Phys. Rev. B 92, 214424 (2015)
189. Magnetic droplet solitons in orthogonal spin valves
S. Chung, S. M. Mohseni, A. Eklund, P. Dürrenfeld, M. Ranjbar, S. R. Sani, T. N. Anh Nguyen, R. K. Dumas, and J. Åkerman
Low Temp. Phys. 41, 833 (2015)
188. Dynamically Stabilized Magnetic Skyrmions
Y. Zhou, E. Iacocca, A. Awad, R. K. Dumas, F. C. Zhang, and J. Åkerman
Nature Communications 6, 8193 (2015), see also the related arXiv.org:1404.3281v2
187. Spin pumping and the inverse spin Hall effect via magnetostatic surface spin wave modes in YIG/Pt bilayers
M. Balinsky, M. Ranjbar, M. Haidar, P. Dürrenfeld, S. Khartsev, A. Slavin, J. Åkerman, and R. K. Dumas
IEEE Magn. Lett. 6, 3000604 (2015)
186. Planar Hall effect bridge sensor with NiFeX (X=Cu, Ag, and Au) sensing layer
F. Qejvanaj, H. Mazraati, S. Jiang, A. Persson, S. R. Sani, S. Chung, F. Magnusson, and J. Åkerman
IEEE Trans. Magn. PP, early access (2015)
185. Modulation rate study in spin torque oscillator based wireless communication systems
R. Sharma, P. Dürrenfeld, M. Ranjbar, R. K. Dumas, J. Åkerman, and P. K. Muduli
IEEE Trans. Magn. PP, early access (2015)
184. Measuring acoustic mode resonance alone as a sensitive technique to extract the antiferromagnetic coupling strength
Y. Wei, P. Svedlindh, M. Kostylev, M. Ranjbar, R. K. Dumas, and J. Åkerman
Phys. Rev. B 92, 064418 (2015)
183. Temperature effect on exchange coupling and magnetization reversal in antiferromagnetically coupled (Co/Pd) multilayers
R. Sbiaa, I. A. Al-Omari, P. R. Kharel, M. Ranjbar, D. J, Sellmyer, J. Åkerman, and S. N. Piramanayagam
J. Appl. Phys. 118, 063902 (2015)
182. Tunable permalloy-based films for magnonic devices
Y. Yin, F. Pan, M. Ahlberg, M. Ranjbar, P. Dürrenfeld, A. Houshang, M. Haidar, L. Bergqvist, Y. Zhai, R. K. Dumas, A. Delin, and J. Åkerman
Phys. Rev. B 92, 024427 (2015)
181. Graphene Spintronics: the European Flagship perspective
S. Roche, J. Åkerman, B. Beschoten, J. C. Charlier, M. Chshiev, S. P. Dash, B. Dlubak, J. Fabian, A. Fert, M. Guimarães, F. Guinea, I. Grigorieva, C. Schoenenberger, P. Seneor, C. Stampfer, S. Valenzuela, X. Waintal, B. van Wees
2D Mater. 2, 030202 (2015)
180. Propagating spin waves excited by spin-transfer torque: A combined electrical and optical study
M. Madami, E. Iacocca, S. R. Sani, G. Gubbiotti, S. Tacchi, R. K. Dumas, J. Åkerman, and G. Carlotti
Phys. Rev. B 92, 024403 (2015)
179. Integration of GMR-based spin torque oscillators and CMOS circuitry
T. Chen, A. Eklund, S. R. Sani, S. Rodriguez, B. G. Malm, J. Åkerman, and A. Rusu
Solid State Electron. 111, 91 (2015)
178. Active Magnetoplasmonic Ruler
I. Zubritskaya, K. Lodewijks, N. Maccaferri, A. Mekonnen, R. K. Dumas, J. Åkerman, P. Vavassori, and A. Dmitriev
Nano Lett. 15, 3204 (2015)
177. Au/Py magnetoplasmonics for magnetic memory and magnetic field sensors
M. Moradi, S.M. Mohseni, S. Mahmoodi, S. Chung, and J. Åkerman
Electron. Mater. Lett. 11, 440 (2015)
176. Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector magnetometry
C. Morrison, J. J. Miles, T. N. Anh Nguyen, Y. Fang, R. K. Dumas, J. Åkerman, and T. Thomson
J. Appl. Phys. 117, 17B526 (2015)
175. Mode-coupling mechanisms in nanocontact spin-torque oscillators
E. Iacocca, P. Dürrenfeld, O. Heinonen, J. Åkerman and R. K. Dumas
Phys. Rev. B, 91, 104405 (2015)
174. Role of Boron diffusion in CoFeB/MgO magnetic tunnel junctions
S. Mukherjee, R. Knut, S. M. Mohseni, T. N. Anh Nguyen, S. Chung, Q. Tuan Le, J. Åkerman, J. Persson, A. Sahoo, A. Hazarika, B. Pal, S. Thiess, M. Gorgoi, P. S. Anil Kumar, W. Drube, O. Karis, and D. D. Sarma
Phys. Rev. B, 91, 085311 (2015)
173. Thickness and temperature dependent magnetodynamic properties of YIG thin films
M. Haidar, M. Ranjbar, M. Balinskiy, R.K. Dumas, S. Khartsev, J. Åkerman
J. Appl. Phys. 117, 17D119 (2015)
172. Spin Hall Effect-controlled magnetization dynamics in NiMnSb
P. Dürrenfeld, F. Gerhard, M. Ranjbar, C. Gould, L. Molenkamp, and J. Åkerman
J. Appl. Phys. 117, 17E103 (2015)
171. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part II: Verilog-A Model Implementation
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev. 62, 1045 (2015)
170. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part I: Analytical Model of the MTJ STO
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev. 62, 1037 (2015)
169. Exponentially decaying magnetic coupling in sputtered thin film FeNi/Cu/FeCo trilayers
Y. Wei, S. Akansel, T. Thersleff, I. Harward, R. Brucas, M. Ranjbar, S. Jana, P. Lansåker, Y. Pogoryelov, R. K. Dumas, K. Leifer, O. Karis, J. Åkerman, Z. Celinski, and P. Svedlindh
Appl. Phys. Lett. 106, 042405 (2015)
168. Ultrasensitive and label-free molecular level detection enabled by light phase control in magnetoplasmonic nanoantennas
N. Maccaferri, K. Gregorczyk, T. de Oliviera, M. Kataja, S. van Dijken, Z. Pirzadeh, A. Dmitriev, J. Åkerman, M. Knez, and P. Vavassori
Nature Communications 6, 6150 (2015)
167. Domain structures and magnetization reversal in Co/Pd and CoFeB/Pd multilayers
R. Sbiaa, M. Ranjbar, and J. Åkerman
J. Appl. Phys. 117, 17C102 (2015)
166. Magnetic structure and anisotropy of [Co/Pd]5/NiFe multilayers
L. Tryputen, F. Guo, F. Liu, T. N. Anh Nguyen, S. M. Mohseni, S. Chung, Y. Fang, J. Åkerman, R. D. McMichael, and C. A. Ross
Phys. Rev. B. 91, 014407 (2015)
R. Escobar, L. Tryputen, S. Castillo-Sepúlveda, D. Altbir, S. Chung, T. N. Anh Nguyen, S. M. Mohseni, J. Åkerman, and C. Ross.
IEEE Magn. Lett. 7, 4101205 (2015)
190. Tunable damping, saturation magnetization, and exchange stiffness of half-Heusler NiMnSb thin films
P. Dürrenfeld, F. Gerhard, J. Chico, R. K. Dumas, M. Ranjbar, A. Bergman, L. Bergqvist, A. Delin, C. Gould, L. W. Molenkamp, and J. Åkerman
Phys. Rev. B 92, 214424 (2015)
189. Magnetic droplet solitons in orthogonal spin valves
S. Chung, S. M. Mohseni, A. Eklund, P. Dürrenfeld, M. Ranjbar, S. R. Sani, T. N. Anh Nguyen, R. K. Dumas, and J. Åkerman
Low Temp. Phys. 41, 833 (2015)
188. Dynamically Stabilized Magnetic Skyrmions
Y. Zhou, E. Iacocca, A. Awad, R. K. Dumas, F. C. Zhang, and J. Åkerman
Nature Communications 6, 8193 (2015), see also the related arXiv.org:1404.3281v2
187. Spin pumping and the inverse spin Hall effect via magnetostatic surface spin wave modes in YIG/Pt bilayers
M. Balinsky, M. Ranjbar, M. Haidar, P. Dürrenfeld, S. Khartsev, A. Slavin, J. Åkerman, and R. K. Dumas
IEEE Magn. Lett. 6, 3000604 (2015)
186. Planar Hall effect bridge sensor with NiFeX (X=Cu, Ag, and Au) sensing layer
F. Qejvanaj, H. Mazraati, S. Jiang, A. Persson, S. R. Sani, S. Chung, F. Magnusson, and J. Åkerman
IEEE Trans. Magn. PP, early access (2015)
185. Modulation rate study in spin torque oscillator based wireless communication systems
R. Sharma, P. Dürrenfeld, M. Ranjbar, R. K. Dumas, J. Åkerman, and P. K. Muduli
IEEE Trans. Magn. PP, early access (2015)
184. Measuring acoustic mode resonance alone as a sensitive technique to extract the antiferromagnetic coupling strength
Y. Wei, P. Svedlindh, M. Kostylev, M. Ranjbar, R. K. Dumas, and J. Åkerman
Phys. Rev. B 92, 064418 (2015)
183. Temperature effect on exchange coupling and magnetization reversal in antiferromagnetically coupled (Co/Pd) multilayers
R. Sbiaa, I. A. Al-Omari, P. R. Kharel, M. Ranjbar, D. J, Sellmyer, J. Åkerman, and S. N. Piramanayagam
J. Appl. Phys. 118, 063902 (2015)
182. Tunable permalloy-based films for magnonic devices
Y. Yin, F. Pan, M. Ahlberg, M. Ranjbar, P. Dürrenfeld, A. Houshang, M. Haidar, L. Bergqvist, Y. Zhai, R. K. Dumas, A. Delin, and J. Åkerman
Phys. Rev. B 92, 024427 (2015)
181. Graphene Spintronics: the European Flagship perspective
S. Roche, J. Åkerman, B. Beschoten, J. C. Charlier, M. Chshiev, S. P. Dash, B. Dlubak, J. Fabian, A. Fert, M. Guimarães, F. Guinea, I. Grigorieva, C. Schoenenberger, P. Seneor, C. Stampfer, S. Valenzuela, X. Waintal, B. van Wees
2D Mater. 2, 030202 (2015)
180. Propagating spin waves excited by spin-transfer torque: A combined electrical and optical study
M. Madami, E. Iacocca, S. R. Sani, G. Gubbiotti, S. Tacchi, R. K. Dumas, J. Åkerman, and G. Carlotti
Phys. Rev. B 92, 024403 (2015)
179. Integration of GMR-based spin torque oscillators and CMOS circuitry
T. Chen, A. Eklund, S. R. Sani, S. Rodriguez, B. G. Malm, J. Åkerman, and A. Rusu
Solid State Electron. 111, 91 (2015)
178. Active Magnetoplasmonic Ruler
I. Zubritskaya, K. Lodewijks, N. Maccaferri, A. Mekonnen, R. K. Dumas, J. Åkerman, P. Vavassori, and A. Dmitriev
Nano Lett. 15, 3204 (2015)
177. Au/Py magnetoplasmonics for magnetic memory and magnetic field sensors
M. Moradi, S.M. Mohseni, S. Mahmoodi, S. Chung, and J. Åkerman
Electron. Mater. Lett. 11, 440 (2015)
176. Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector magnetometry
C. Morrison, J. J. Miles, T. N. Anh Nguyen, Y. Fang, R. K. Dumas, J. Åkerman, and T. Thomson
J. Appl. Phys. 117, 17B526 (2015)
175. Mode-coupling mechanisms in nanocontact spin-torque oscillators
E. Iacocca, P. Dürrenfeld, O. Heinonen, J. Åkerman and R. K. Dumas
Phys. Rev. B, 91, 104405 (2015)
174. Role of Boron diffusion in CoFeB/MgO magnetic tunnel junctions
S. Mukherjee, R. Knut, S. M. Mohseni, T. N. Anh Nguyen, S. Chung, Q. Tuan Le, J. Åkerman, J. Persson, A. Sahoo, A. Hazarika, B. Pal, S. Thiess, M. Gorgoi, P. S. Anil Kumar, W. Drube, O. Karis, and D. D. Sarma
Phys. Rev. B, 91, 085311 (2015)
173. Thickness and temperature dependent magnetodynamic properties of YIG thin films
M. Haidar, M. Ranjbar, M. Balinskiy, R.K. Dumas, S. Khartsev, J. Åkerman
J. Appl. Phys. 117, 17D119 (2015)
172. Spin Hall Effect-controlled magnetization dynamics in NiMnSb
P. Dürrenfeld, F. Gerhard, M. Ranjbar, C. Gould, L. Molenkamp, and J. Åkerman
J. Appl. Phys. 117, 17E103 (2015)
171. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part II: Verilog-A Model Implementation
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev. 62, 1045 (2015)
170. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part I: Analytical Model of the MTJ STO
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev. 62, 1037 (2015)
169. Exponentially decaying magnetic coupling in sputtered thin film FeNi/Cu/FeCo trilayers
Y. Wei, S. Akansel, T. Thersleff, I. Harward, R. Brucas, M. Ranjbar, S. Jana, P. Lansåker, Y. Pogoryelov, R. K. Dumas, K. Leifer, O. Karis, J. Åkerman, Z. Celinski, and P. Svedlindh
Appl. Phys. Lett. 106, 042405 (2015)
168. Ultrasensitive and label-free molecular level detection enabled by light phase control in magnetoplasmonic nanoantennas
N. Maccaferri, K. Gregorczyk, T. de Oliviera, M. Kataja, S. van Dijken, Z. Pirzadeh, A. Dmitriev, J. Åkerman, M. Knez, and P. Vavassori
Nature Communications 6, 6150 (2015)
167. Domain structures and magnetization reversal in Co/Pd and CoFeB/Pd multilayers
R. Sbiaa, M. Ranjbar, and J. Åkerman
J. Appl. Phys. 117, 17C102 (2015)
166. Magnetic structure and anisotropy of [Co/Pd]5/NiFe multilayers
L. Tryputen, F. Guo, F. Liu, T. N. Anh Nguyen, S. M. Mohseni, S. Chung, Y. Fang, J. Åkerman, R. D. McMichael, and C. A. Ross
Phys. Rev. B. 91, 014407 (2015)
Publications in 2014 (30 papers)
165. Modulation-mediated unlocking of a parametrically phase-locked spin torque oscillator
P. Dürrenfeld, E. Iacocca, J. Åkerman, and P. K. Muduli,
Appl. Phys. Lett. 104, 252404 (2014)
164. Magnetoplasmonic Design Rules for Active Magneto-Optics
K. Lodewijks, N. Maccaferri, T. Pakizeh, R. K. Dumas, E. Zubritskaya, J. Åkerman, P. Vavassori, and A. Dmitriev
Nano Letters 14, 7207 (2014)
163. CoFeB based spin Hall nano-oscillators
M. Ranjbar, P. Dürrenfeld, M. Haidar, E. Iacocca, M. Balinskiy, T. Q. Le, M. Fazlali, A. Houshang, A. Awad, R. K. Dumas, and J. Åkerman
IEEE Magnetics Letters 5, 3000504 (2014)
162. An inductorless wideband balun-LNA for spin torque oscillator-based field sensing
T. Chen, S. Rodriguez, J. Åkerman, and A. Rusu
Proc. IEEE ICECS 2014 (2014)
161. Thick double-biased IrMn/NiFe/IrMn planar Hall effect bridge sensors
F. Qejvanaj, M. Zubair, A. Persson, S. M. Mohseni, V. Fallahi, S. R. Sani, S. Chung, T. Le, F. Magnusson, and J. Åkerman
IEEE Trans. Magn. 50, 4006104 (2014)
160. [Co/Pd]-CoFeB exchange springs with tunable gap of spin wave excitations
S. Tacchi, T. N. Anh Nguyen, G. Gubbiotti, M. Madami, G. Carlotti, M. G. Pini, A. Rettori, V. Fallahi, R. K. Dumas and Johan Åkerman
J. Phys. D: Appl. Phys. 47, 495004 (2014)
159. Effect of excitation fatigue on the synchronization of multiple nanocontact spin-torque oscillators
A. Houshang, M. Fazlali, S. R. Sani, P. Dürrenfeld, E. Iacocca, J. Åkerman, and R. K. Dumas
IEEE Magnetics Letters 5, 3000404 (2014)
158. Depth dependent magnetization profiles of hybrid exchange springs
T. N. Anh Nguyen, R. Knut, V. Fallahi, S. Chung, S. M. Mohseni, Q. Tuan Le, O. Karis, S. Peredkov, R. K. Dumas, Casey W. Miller, and Johan Åkerman
Phys. Rev. Applied 2, 044014 (2014), also available as arXiv.org:1312.0878
157. Accessing different spin-disordered states using first-order reversal curves
R. K. Dumas, P. K. Greene, D. A. Gilbaert, L. Ye, C.-L. Zha, J. Åkerman, and K. Liu
Phys. Rev. B 90, 104410 (2014)
156. Mode-hopping mechanism generating colored noise in a magnetic tunnel junction based spin torque oscillator
Raghav Sharma, P. Dürrenfeld, E. Iacocca, O. G. Heinonen, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 105, 132404 (2014)
155. The 2014 Magnetism Roadmap
Robert L. Stamps, Stephan Breitkreutz, Johan Åkerman, Andrii V. Chumak, YoshiChika Otani, Gerrit E. W. Bauer, Jan-Ulrich Thiele, Martin Bowen, Sara A. Majetich, Mathias Kläui, Ioan Lucian Prejbeanu, Bernard Dieny, Nora M. Dempsey, and Burkard Hillebrands
J. Phys. D: Appl. Phys. 47, 333001 (2014)
154. Spintronics: Channeling spin waves
R. K. Dumas, and J. Åkerman
Nature Nanotechnology 9, 503 (2014)
153. A Highly-Tunable Microwave Oscillator Based on MTJ STO Technology
T. Chen, P. Dürrenfeld, S. Rodriguez, J. Åkerman, and A. Rusu
Microwave and Optical Technology Letters, 56, 2092 (2014).
152. Hysteretic Synchronization in Spin-Torque Nano-Contact Oscillators: a Micromagnetic Study
V. Puliafito, Ye. Pogoryelov, B. Azzerboni, J. Åkerman, and G. Finocchio
IEEE Trans. Nanotechn., 13, 532 (2014).
151. Recent advances in nano-contact spin torque oscillators
Randy K. Dumas, S. R. Sani, S. M. Mohseni, E. Iacocca, Ye. Pogoryelov, P. K. Muduli, S. Chung, P. Dürrenfeld, and Johan Åkerman
IEEE Trans. Magn., 50, 4100107 (2014).
150. Investigation on the tunability of spin configuration inside exchange coupled spring of hard/soft magnets
T. N. Anh Nguyen, V. Fallahi, Q. Tuan Le, S. Chung, S. R. Sani, R. K. Dumas, Casey W. Miller, and J. Åkerman
IEEE Trans. Magn., 50, 2004906 (2014).
149. Effects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic nanodisks
Nicolò Maccaferri, Mikko Kataja, Valentina Bonanni, Stefano Bonetti, Zhaleh Pirzadeh, Alexandre Dmitriev, Sebastiaan van Dijken, Johan Åkerman, and Paolo Vavassori
Phys. Status Solidi A 211, 1067–1075 (2014).
148. Effect of nano-confinement on the formation, structural transition and magnetic behavior of mesoporous copper ferrite
N. Najmoddin, A. Beitollahi, M. Muhammed, N. Ansaria, E. Devlinc, S. M. Mohseni, H. Rezajeb, D. Niarchos, J. Åkerman, and M. S. Toprak
Journal of Alloys and Compounds 598, 191 (2014).
147. Magnetic properties of crystalline mesoporous Zn-substituted copper ferrite synthesized under nanoconfinement in silica matrix
N. Najmoddin, A. Beitollahi, E. Devlin, H. Kavas, S. M. Mohseni, J. Åkerman, D. Niarchos, H. Rezaie, M. Muhammed, M. S. Toprak
Microporous and Mesoporous Materials 190, 346 (2014).
146. Spin Transfer Torque Generated Magnetic Droplet Solitons
S. Chung, S. M. Mohseni, S. R. Sani, E. Iacocca, R. K. Dumas, T. N. Anh Nguyen, Ye. Pogoryelov, P. K. Muduli, A. Eklund, M. Hoefer, and J. Åkerman
J. Appl. Phys. 115, 172612 (2014).
145. Dependence of the colored frequency noise in spin torque oscillators on current and magnetic field
Anders J. Eklund, Stefano Bonetti, Sohrab R. Sani, S. Majid Mohseni, Johan Persson, Sunjae Chung, Amir Banuazizi, Ezio Iacocca, M. Östling, Johan Åkerman, and B. Gunnar Malm,
Appl. Phys. Lett., 104, 092405 (2014).
144. Magnetic coupling in asymmetric FeCoV/Ru/FeNi trilayers
Yajun Wei, Somnath Jana, Rimantas Brucas, Yevgen Pogoryelov, Mojtaba Ranjbar, Randy K. Dumas, Peter Warnicke, Johan Åkerman, Dario A. Arena, Olof Karis, and Peter Svedlindh
J. Appl. Phys. 115, 17D129 (2014).
143. Generation linewidth of mode-hopping spin torque oscillators
E. Iacocca, O. Heinonen, P. K. Muduli, and Johan Åkerman
Phys. Rev. B 89, 054402 (2014), also available as arXiv.org:1311.7660
142. Parametric Excitation in a Magnetic Tunnel Junction-Based Spin Torque Oscillator
P. Dürrenfeld, E. Iacocca, Johan Åkerman, and P. K. Muduli.
Appl. Phys. Lett. 104, 052410 (2014)
141. Con fined dissipative droplet solitons in spin-valve nanowires with perpendicular magnetic anisotropy
E. Iacocca, R.K. Dumas, L. Bookman, S.M. Mohseni, S. Chung, M. Hoefer, and J. Åkerman
Phys. Rev. Lett. 112, 047201 (2014), also available as arXiv.org:1308.4812
140. Magnetic droplet solitons in orthogonal nano-contact spin torque oscillators
S.M. Mohseni, S.R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov, P. K. Muduli, E. Iacocca, R. K. Dumas, A. Eklund, M. Hoefer, and Johan Åkerman
Physica B 435, 84 (2014).
139. XRD Cation Distribution and Magnetic Properties of Mesoporous Zn substituted CuFe2O4
Najmeh Najmoddin, Ali Beitollahi, Huseyn Kavas, Majid Mohseni, Hamidreza Rezaie, Johan Åkerman, Muhammet S. Toprak
Ceramics International 40, 3619 (2014).
138. Spin reorientation via antiferromagnetic coupling
M. Ranjbar, R. Sbiaa, R. K. Dumas, J. Åkerman, S. N. Piramanayagam
J. Appl. Phys. 115, 17C103 (2014).
137. Oxidation states and quality of upper interfaces in magnetic tunnel junctions: Oxygen effect on crystallization of interfaces
S. Kamali, C. L. Zha, Y. Yoda, and Johan Åkerman
J. Phys.: Condens. Matter 26, 026004 (2014).
136. Linear Phase Tuning of Spin Torque Oscillators Using In-Plane Microwave Fields
Tui Zeng, Yan Zhou, Johan Åkerman, P. T. Lai, and Philip W. T. Pong
IEEE Trans. Magn. 50, 1400104 (2014).
P. Dürrenfeld, E. Iacocca, J. Åkerman, and P. K. Muduli,
Appl. Phys. Lett. 104, 252404 (2014)
164. Magnetoplasmonic Design Rules for Active Magneto-Optics
K. Lodewijks, N. Maccaferri, T. Pakizeh, R. K. Dumas, E. Zubritskaya, J. Åkerman, P. Vavassori, and A. Dmitriev
Nano Letters 14, 7207 (2014)
163. CoFeB based spin Hall nano-oscillators
M. Ranjbar, P. Dürrenfeld, M. Haidar, E. Iacocca, M. Balinskiy, T. Q. Le, M. Fazlali, A. Houshang, A. Awad, R. K. Dumas, and J. Åkerman
IEEE Magnetics Letters 5, 3000504 (2014)
162. An inductorless wideband balun-LNA for spin torque oscillator-based field sensing
T. Chen, S. Rodriguez, J. Åkerman, and A. Rusu
Proc. IEEE ICECS 2014 (2014)
161. Thick double-biased IrMn/NiFe/IrMn planar Hall effect bridge sensors
F. Qejvanaj, M. Zubair, A. Persson, S. M. Mohseni, V. Fallahi, S. R. Sani, S. Chung, T. Le, F. Magnusson, and J. Åkerman
IEEE Trans. Magn. 50, 4006104 (2014)
160. [Co/Pd]-CoFeB exchange springs with tunable gap of spin wave excitations
S. Tacchi, T. N. Anh Nguyen, G. Gubbiotti, M. Madami, G. Carlotti, M. G. Pini, A. Rettori, V. Fallahi, R. K. Dumas and Johan Åkerman
J. Phys. D: Appl. Phys. 47, 495004 (2014)
159. Effect of excitation fatigue on the synchronization of multiple nanocontact spin-torque oscillators
A. Houshang, M. Fazlali, S. R. Sani, P. Dürrenfeld, E. Iacocca, J. Åkerman, and R. K. Dumas
IEEE Magnetics Letters 5, 3000404 (2014)
158. Depth dependent magnetization profiles of hybrid exchange springs
T. N. Anh Nguyen, R. Knut, V. Fallahi, S. Chung, S. M. Mohseni, Q. Tuan Le, O. Karis, S. Peredkov, R. K. Dumas, Casey W. Miller, and Johan Åkerman
Phys. Rev. Applied 2, 044014 (2014), also available as arXiv.org:1312.0878
157. Accessing different spin-disordered states using first-order reversal curves
R. K. Dumas, P. K. Greene, D. A. Gilbaert, L. Ye, C.-L. Zha, J. Åkerman, and K. Liu
Phys. Rev. B 90, 104410 (2014)
156. Mode-hopping mechanism generating colored noise in a magnetic tunnel junction based spin torque oscillator
Raghav Sharma, P. Dürrenfeld, E. Iacocca, O. G. Heinonen, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 105, 132404 (2014)
155. The 2014 Magnetism Roadmap
Robert L. Stamps, Stephan Breitkreutz, Johan Åkerman, Andrii V. Chumak, YoshiChika Otani, Gerrit E. W. Bauer, Jan-Ulrich Thiele, Martin Bowen, Sara A. Majetich, Mathias Kläui, Ioan Lucian Prejbeanu, Bernard Dieny, Nora M. Dempsey, and Burkard Hillebrands
J. Phys. D: Appl. Phys. 47, 333001 (2014)
154. Spintronics: Channeling spin waves
R. K. Dumas, and J. Åkerman
Nature Nanotechnology 9, 503 (2014)
153. A Highly-Tunable Microwave Oscillator Based on MTJ STO Technology
T. Chen, P. Dürrenfeld, S. Rodriguez, J. Åkerman, and A. Rusu
Microwave and Optical Technology Letters, 56, 2092 (2014).
152. Hysteretic Synchronization in Spin-Torque Nano-Contact Oscillators: a Micromagnetic Study
V. Puliafito, Ye. Pogoryelov, B. Azzerboni, J. Åkerman, and G. Finocchio
IEEE Trans. Nanotechn., 13, 532 (2014).
151. Recent advances in nano-contact spin torque oscillators
Randy K. Dumas, S. R. Sani, S. M. Mohseni, E. Iacocca, Ye. Pogoryelov, P. K. Muduli, S. Chung, P. Dürrenfeld, and Johan Åkerman
IEEE Trans. Magn., 50, 4100107 (2014).
150. Investigation on the tunability of spin configuration inside exchange coupled spring of hard/soft magnets
T. N. Anh Nguyen, V. Fallahi, Q. Tuan Le, S. Chung, S. R. Sani, R. K. Dumas, Casey W. Miller, and J. Åkerman
IEEE Trans. Magn., 50, 2004906 (2014).
149. Effects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic nanodisks
Nicolò Maccaferri, Mikko Kataja, Valentina Bonanni, Stefano Bonetti, Zhaleh Pirzadeh, Alexandre Dmitriev, Sebastiaan van Dijken, Johan Åkerman, and Paolo Vavassori
Phys. Status Solidi A 211, 1067–1075 (2014).
148. Effect of nano-confinement on the formation, structural transition and magnetic behavior of mesoporous copper ferrite
N. Najmoddin, A. Beitollahi, M. Muhammed, N. Ansaria, E. Devlinc, S. M. Mohseni, H. Rezajeb, D. Niarchos, J. Åkerman, and M. S. Toprak
Journal of Alloys and Compounds 598, 191 (2014).
147. Magnetic properties of crystalline mesoporous Zn-substituted copper ferrite synthesized under nanoconfinement in silica matrix
N. Najmoddin, A. Beitollahi, E. Devlin, H. Kavas, S. M. Mohseni, J. Åkerman, D. Niarchos, H. Rezaie, M. Muhammed, M. S. Toprak
Microporous and Mesoporous Materials 190, 346 (2014).
146. Spin Transfer Torque Generated Magnetic Droplet Solitons
S. Chung, S. M. Mohseni, S. R. Sani, E. Iacocca, R. K. Dumas, T. N. Anh Nguyen, Ye. Pogoryelov, P. K. Muduli, A. Eklund, M. Hoefer, and J. Åkerman
J. Appl. Phys. 115, 172612 (2014).
145. Dependence of the colored frequency noise in spin torque oscillators on current and magnetic field
Anders J. Eklund, Stefano Bonetti, Sohrab R. Sani, S. Majid Mohseni, Johan Persson, Sunjae Chung, Amir Banuazizi, Ezio Iacocca, M. Östling, Johan Åkerman, and B. Gunnar Malm,
Appl. Phys. Lett., 104, 092405 (2014).
144. Magnetic coupling in asymmetric FeCoV/Ru/FeNi trilayers
Yajun Wei, Somnath Jana, Rimantas Brucas, Yevgen Pogoryelov, Mojtaba Ranjbar, Randy K. Dumas, Peter Warnicke, Johan Åkerman, Dario A. Arena, Olof Karis, and Peter Svedlindh
J. Appl. Phys. 115, 17D129 (2014).
143. Generation linewidth of mode-hopping spin torque oscillators
E. Iacocca, O. Heinonen, P. K. Muduli, and Johan Åkerman
Phys. Rev. B 89, 054402 (2014), also available as arXiv.org:1311.7660
142. Parametric Excitation in a Magnetic Tunnel Junction-Based Spin Torque Oscillator
P. Dürrenfeld, E. Iacocca, Johan Åkerman, and P. K. Muduli.
Appl. Phys. Lett. 104, 052410 (2014)
141. Con fined dissipative droplet solitons in spin-valve nanowires with perpendicular magnetic anisotropy
E. Iacocca, R.K. Dumas, L. Bookman, S.M. Mohseni, S. Chung, M. Hoefer, and J. Åkerman
Phys. Rev. Lett. 112, 047201 (2014), also available as arXiv.org:1308.4812
140. Magnetic droplet solitons in orthogonal nano-contact spin torque oscillators
S.M. Mohseni, S.R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov, P. K. Muduli, E. Iacocca, R. K. Dumas, A. Eklund, M. Hoefer, and Johan Åkerman
Physica B 435, 84 (2014).
139. XRD Cation Distribution and Magnetic Properties of Mesoporous Zn substituted CuFe2O4
Najmeh Najmoddin, Ali Beitollahi, Huseyn Kavas, Majid Mohseni, Hamidreza Rezaie, Johan Åkerman, Muhammet S. Toprak
Ceramics International 40, 3619 (2014).
138. Spin reorientation via antiferromagnetic coupling
M. Ranjbar, R. Sbiaa, R. K. Dumas, J. Åkerman, S. N. Piramanayagam
J. Appl. Phys. 115, 17C103 (2014).
137. Oxidation states and quality of upper interfaces in magnetic tunnel junctions: Oxygen effect on crystallization of interfaces
S. Kamali, C. L. Zha, Y. Yoda, and Johan Åkerman
J. Phys.: Condens. Matter 26, 026004 (2014).
136. Linear Phase Tuning of Spin Torque Oscillators Using In-Plane Microwave Fields
Tui Zeng, Yan Zhou, Johan Åkerman, P. T. Lai, and Philip W. T. Pong
IEEE Trans. Magn. 50, 1400104 (2014).
Publications in 2013 (15 papers)
135. Mutually synchronized bottom-up multi-nano-contact spin torque oscillators
S. R. Sani, J. Persson, M. S. Mohseni, Ye. Pogoryelov, P. K. Muduli, A. Eklund, G. Malm, M. Käll, A. Dmitriev, and Johan Åkerman
Nature Comm., 4, 2731 (2013).
134. Non-stationary excitation of two localized spin-wave modes in a nano-contact spin torque oscillator
G. Consolo, G. Finocchio, G. Siracusan, S. Bonetti, A. Eklund, J. Akerman, B. Azzerboni
J. Appl. Phys. 114, 153906 (2013).
133. Tuning the Magneto-Optical Response of Nanosize Ferromagnetic Ni Disks Using the Phase of Localized Plasmons
Nicolò Maccaferri, Andreas Berger, Stefano Bonetti, Valentina Bonanni, Mikko Kataja, Qi Hang Qin, Sebastiaan van Dijken, Zhaleh Pirzadeh, Alexandre Dmitriev, Josep Nogués, Johan Åkerman, and Paolo Vavassori
Phys. Rev. Lett., 111, 167401 (2013).
132. Triple mode-jumping in a spin torque oscillator
A. J. Eklund, S. R. Sani, S. M. Mohseni, J. Persson, B. G. Malm and J. Åkerman
IEEE 22nd International Conference on Noise and Fluctuation (2013).
131. Decoherence, Mode Hopping, and Mode Coupling in Spin Torque Oscillators
O. Heinonen, P. K. Muduli, and Johan Åkerman
IEEE Trans. Magn. 49, 4398 (2013).
130. Microwave signal generation in single-layer nano-contact spin-torque oscillators
S. R. Sani, P. Dürrenfeld, S.M. Mohseni, S. Chung, and Johan Åkerman
IEEE Trans. Mag., 49, 4331 (2013).
129. Reversal mode instability and magnetoresistance in perpendicular [Co/Pd]/Cu/[Co/Ni] pseudo-spin-valves
J. E. Davies, D. A. Gilbert, S. M. Mohseni, R. K. Dumas, Johan Åkerman, and Kai Liu
Appl. Phys. Lett. 103, 022409 (2013).
128. Resonant excitation of injection-locked spin-torque oscillators
E. Iacocca and Johan Åkerman
Phys. Rev. B, 87, 214428 (2013).
127. Spin wave mode coexistence: A consequence of the Oersted field induced asymmetric energy landscape
R. K. Dumas, E. Iacocca, S. Bonetti, S. R. Sani, M. S. Mohseni, A. Eklund, J. Persson, O. Heinonen, and Johan Åkerman
Phys. Rev. Lett., 110, 257202 (2013). (See also arXiv:1303.7148 (2013))
126. Spin wave excitations in exchange-coupled [Co/Pd-NiFe] films with tunable tilting of the magnetization
S. Tacchi, T. N. Anh Nguyen, G. Carlotti, G. Gubbiotti, M. Madami, R. K. Dumas, J. Åkerman, A. Rettori, and M. G. Pini
Phys. Rev. B, 87, 144426 (2013).
125. Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids
N. Maccaferri, J. B. González-Díaz, S. Bonetti, A. Berger, M. Kataja, S. van Dijken, J. Nogués, V. Bonanni, Z. Pirzadeh, A. Dmitriev, J. Åkerman, and P. Vavassori
Opt. Expr., 21, 9875 (2013).
124. Spin Torque-Generated Magnetic Droplet Solitons
S. M. Mohseni, S. R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov, P. K. Muduli, E. Iacocca, A. Eklund, R. K. Dumas, S. Bonetti, A. Deac, M. Hoefer, and Johan Åkerman
Science 339, 1295 (2013).
123. Oxidation states and quality of lower interfaces of magnetic tunnel junctions: Oxygen effect on crystallization of interfaces
S. Kamali, C. L. Zha, Y. Yoda, and Johan Åkerman
J. Phys.: Condens. Matter 25, 135302 (2013).
122. Tunable spin configuration in [Co/Ni]-NiFe spring magnets
S. Chung, S. M. Mohseni, V. Fallahi, T. N. Anh Nguyen, N. Benatmane, R. K. Dumas, and Johan Åkerman
J. Phys. D: Appl. Phys. 46, 125004 (2013)
121. Nano-Contact Spin-Torque Oscillators as Magnonic Building Blocks
S. Bonetti and Johan Åkerman
Chapter 13, Topics in Applied Physics 125, 177 (2013).
S. R. Sani, J. Persson, M. S. Mohseni, Ye. Pogoryelov, P. K. Muduli, A. Eklund, G. Malm, M. Käll, A. Dmitriev, and Johan Åkerman
Nature Comm., 4, 2731 (2013).
134. Non-stationary excitation of two localized spin-wave modes in a nano-contact spin torque oscillator
G. Consolo, G. Finocchio, G. Siracusan, S. Bonetti, A. Eklund, J. Akerman, B. Azzerboni
J. Appl. Phys. 114, 153906 (2013).
133. Tuning the Magneto-Optical Response of Nanosize Ferromagnetic Ni Disks Using the Phase of Localized Plasmons
Nicolò Maccaferri, Andreas Berger, Stefano Bonetti, Valentina Bonanni, Mikko Kataja, Qi Hang Qin, Sebastiaan van Dijken, Zhaleh Pirzadeh, Alexandre Dmitriev, Josep Nogués, Johan Åkerman, and Paolo Vavassori
Phys. Rev. Lett., 111, 167401 (2013).
132. Triple mode-jumping in a spin torque oscillator
A. J. Eklund, S. R. Sani, S. M. Mohseni, J. Persson, B. G. Malm and J. Åkerman
IEEE 22nd International Conference on Noise and Fluctuation (2013).
131. Decoherence, Mode Hopping, and Mode Coupling in Spin Torque Oscillators
O. Heinonen, P. K. Muduli, and Johan Åkerman
IEEE Trans. Magn. 49, 4398 (2013).
130. Microwave signal generation in single-layer nano-contact spin-torque oscillators
S. R. Sani, P. Dürrenfeld, S.M. Mohseni, S. Chung, and Johan Åkerman
IEEE Trans. Mag., 49, 4331 (2013).
129. Reversal mode instability and magnetoresistance in perpendicular [Co/Pd]/Cu/[Co/Ni] pseudo-spin-valves
J. E. Davies, D. A. Gilbert, S. M. Mohseni, R. K. Dumas, Johan Åkerman, and Kai Liu
Appl. Phys. Lett. 103, 022409 (2013).
128. Resonant excitation of injection-locked spin-torque oscillators
E. Iacocca and Johan Åkerman
Phys. Rev. B, 87, 214428 (2013).
127. Spin wave mode coexistence: A consequence of the Oersted field induced asymmetric energy landscape
R. K. Dumas, E. Iacocca, S. Bonetti, S. R. Sani, M. S. Mohseni, A. Eklund, J. Persson, O. Heinonen, and Johan Åkerman
Phys. Rev. Lett., 110, 257202 (2013). (See also arXiv:1303.7148 (2013))
126. Spin wave excitations in exchange-coupled [Co/Pd-NiFe] films with tunable tilting of the magnetization
S. Tacchi, T. N. Anh Nguyen, G. Carlotti, G. Gubbiotti, M. Madami, R. K. Dumas, J. Åkerman, A. Rettori, and M. G. Pini
Phys. Rev. B, 87, 144426 (2013).
125. Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids
N. Maccaferri, J. B. González-Díaz, S. Bonetti, A. Berger, M. Kataja, S. van Dijken, J. Nogués, V. Bonanni, Z. Pirzadeh, A. Dmitriev, J. Åkerman, and P. Vavassori
Opt. Expr., 21, 9875 (2013).
124. Spin Torque-Generated Magnetic Droplet Solitons
S. M. Mohseni, S. R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov, P. K. Muduli, E. Iacocca, A. Eklund, R. K. Dumas, S. Bonetti, A. Deac, M. Hoefer, and Johan Åkerman
Science 339, 1295 (2013).
123. Oxidation states and quality of lower interfaces of magnetic tunnel junctions: Oxygen effect on crystallization of interfaces
S. Kamali, C. L. Zha, Y. Yoda, and Johan Åkerman
J. Phys.: Condens. Matter 25, 135302 (2013).
122. Tunable spin configuration in [Co/Ni]-NiFe spring magnets
S. Chung, S. M. Mohseni, V. Fallahi, T. N. Anh Nguyen, N. Benatmane, R. K. Dumas, and Johan Åkerman
J. Phys. D: Appl. Phys. 46, 125004 (2013)
121. Nano-Contact Spin-Torque Oscillators as Magnonic Building Blocks
S. Bonetti and Johan Åkerman
Chapter 13, Topics in Applied Physics 125, 177 (2013).
Publications in 2012 (11 papers)
120. A non-volatile spintronic memory element with a continuum of resistance states
Y. Fang, R. K. Dumas, T. N. Anh Nguyen, S. M. Mohseni, S. Chung, C. W. Miller, and Johan Åkerman
Adv. Funct. Mater., 10.1002/adfm.201202319 (2012).
119. Temperature dependence of linewidth in nano-contact based spin torque oscillators: effect of multiple oscillatory modes
P. K. Muduli, O. Heinonen, and Johan Åkerman
Phys. Rev. B 86, 174408 (2012).
118. Spin-Torque Oscillator in an Electromagnet Package
J. Persson, S. R. Sani, S. Bonetti, F. Magnusson, Ye. Pogoryelov, S. M. Mohseni, S. Gunnarsson, M. Norling, C. Stoij, and Johan Åkerman
IEEE Trans. Mag. 48, 4378 (2012).
117. Combined wide-narrow double modulation of spin-torque oscillators for improved linewidth during communication
Ye. Pogoryelov, P. K. Muduli, and Johan Åkerman
IEEE Trans. Mag. 48, 4077 (2012).
116. Macrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators
Y. Zhou, H. Zhang, Y. Liu, and Johan Åkerman
J. Appl. Phys. 112, 063903 (2012).
115. [Co/Pd]4-Co-Pd-NiFe spring magnets with highly tunable and uniform magnetization tilt angles
T. N. Anh Nguyen, N. Benatmane, V. Fallahi, Yeyu Fang, S. M. Mohseni, R. K. Dumas, and Johan Åkerman
J. Magn. Magn. Mat. 324, 3929 (2012).
114. Multiple synchronization attractors of serially connected spin-torque nano-oscillators
D. Li, Y. Zhou, B. Hu, J. Åkerman, and C. Zhou
Phys. Rev. B 86, 014418 (2012).
113. Analytical investigation of modulated spin torque oscillators in the framework of coupled differential equations with variable coefficients
Ezio Iacocca and Johan Åkerman
Phys. Rev. B 85, 184420 (2012).
112. Power and linewidth of propagating and localized modes in nano-contact spin-torque oscillators
S. Bonetti, V. Puliafito, G. Consolo, V. S. Tiberkevich, A. Slavin, and Johan Åkerman
Phys. Rev. B 85, 174427 (2012).
111. Decoherence and mode hopping in a magnetic tunnel junction based spin torque oscillator
P. K. Muduli, O. Heinonen, and Johan Åkerman
Phys. Rev. Lett. 108, 207203 (2012).
110. Utility of reactively sputtered CuNx films in spintronic devices
Yeyu Fang, J. Persson, C. L. Zha, J. Willman, C. Hendryx, Casey W. Miller, and Johan Åkerman
J. Appl. Phys. 111, 073912 (2012).
Y. Fang, R. K. Dumas, T. N. Anh Nguyen, S. M. Mohseni, S. Chung, C. W. Miller, and Johan Åkerman
Adv. Funct. Mater., 10.1002/adfm.201202319 (2012).
119. Temperature dependence of linewidth in nano-contact based spin torque oscillators: effect of multiple oscillatory modes
P. K. Muduli, O. Heinonen, and Johan Åkerman
Phys. Rev. B 86, 174408 (2012).
118. Spin-Torque Oscillator in an Electromagnet Package
J. Persson, S. R. Sani, S. Bonetti, F. Magnusson, Ye. Pogoryelov, S. M. Mohseni, S. Gunnarsson, M. Norling, C. Stoij, and Johan Åkerman
IEEE Trans. Mag. 48, 4378 (2012).
117. Combined wide-narrow double modulation of spin-torque oscillators for improved linewidth during communication
Ye. Pogoryelov, P. K. Muduli, and Johan Åkerman
IEEE Trans. Mag. 48, 4077 (2012).
116. Macrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators
Y. Zhou, H. Zhang, Y. Liu, and Johan Åkerman
J. Appl. Phys. 112, 063903 (2012).
115. [Co/Pd]4-Co-Pd-NiFe spring magnets with highly tunable and uniform magnetization tilt angles
T. N. Anh Nguyen, N. Benatmane, V. Fallahi, Yeyu Fang, S. M. Mohseni, R. K. Dumas, and Johan Åkerman
J. Magn. Magn. Mat. 324, 3929 (2012).
114. Multiple synchronization attractors of serially connected spin-torque nano-oscillators
D. Li, Y. Zhou, B. Hu, J. Åkerman, and C. Zhou
Phys. Rev. B 86, 014418 (2012).
113. Analytical investigation of modulated spin torque oscillators in the framework of coupled differential equations with variable coefficients
Ezio Iacocca and Johan Åkerman
Phys. Rev. B 85, 184420 (2012).
112. Power and linewidth of propagating and localized modes in nano-contact spin-torque oscillators
S. Bonetti, V. Puliafito, G. Consolo, V. S. Tiberkevich, A. Slavin, and Johan Åkerman
Phys. Rev. B 85, 174427 (2012).
111. Decoherence and mode hopping in a magnetic tunnel junction based spin torque oscillator
P. K. Muduli, O. Heinonen, and Johan Åkerman
Phys. Rev. Lett. 108, 207203 (2012).
110. Utility of reactively sputtered CuNx films in spintronic devices
Yeyu Fang, J. Persson, C. L. Zha, J. Willman, C. Hendryx, Casey W. Miller, and Johan Åkerman
J. Appl. Phys. 111, 073912 (2012).
Publications in 2011 (20 papers)
109. Designer magnetoplasmonics with nickel nanoferromagnets
V. Bonanni, S. Bonetti, T. Pakizeh, Z. Pirzadeh, J. Chen, J. Nogués, P. Vavassori, R. Hillenbrand, J. Åkerman, A. Dmitriev.
Nano Letters, 11, 5333 (2011).
108. Destabilization of serially connected spin-torque oscillators via non-Adlerian dynamics
E. Iacocca and Johan Åkerman,
J. Appl. Phys. 110, 103910 (2011).
107. Temperature dependent interlayer coupling in Ni/Co perpendicular pseudo-spin-valve structures
S. M. Mohseni, R. K. Dumas, Y. Fang, J. W. Lau, S. R. Sani, J. Persson, and Johan Åkerman
Phys. Rev. B 84, 174432 (2011).
106. High frequency operation of a spin-torque oscillator at low field
S. M. Mohseni, S. R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov and Johan Åkerman
Phys. Status Solidi RRL 5, 432 (2011).
105. Nanostructured MnGa Films on Si/SiO2 with 20.5 kOe Room Temperature Coercivity
C. L. Zha, R. K. Dumas, J. W. Lau, S. M. Mohseni, S. R. Sani, I. V. Golosovsky, Å. F. Monsen, J. Nogués, and Johan Åkerman,
J. Appl. Phys. 110, 093902 (2011).
104. Intrinsic frequency doubling in a magnetic tunnel junction-based spin torque oscillator
P. K. Muduli, O. G. Heinonen, and Johan Åkerman,
J. Appl. Phys. 110, 076102 (2011).
103. Direct observation of a propagating spin wave induced by spin-transfer torque
M. Madami, S. Bonetti, G. Consolo, S. Tacchi, G. Carlotti, G. Gubbiotti, F. B. Mancoff, M. A. Yar, and Johan Åkerman,
Nature Nanotechnology 6, 635 (2011)
102. Probing vertically graded anisotropy in FePtCu films
R. K. Dumas, Yeyu Fang, B. J. Kirby, C. L. Zha, V. Bonanni, J. Nogués, and Johan Åkerman,
Phys. Rev. B 84, 054434 (2011).
101. Modulation of single and double spin torque oscillators
P. K. Muduli, Ye. Pogoryelov, G. Consolo, F. Mancoff, and Johan Åkerman,
AIP Conf. Proc. 1347, 318 (2011).
100. Plasmonic Nickel Nanoantennas
J. Chen, P. Albella, Z. Pirzadeh, P. Alonso-González, F. Huth, S. Bonetti, V. Bonanni, J. Åkerman, J. Nogués, P. Vavassori, A. Dmitriev, J. Aizpurua, and R. Hillenbrand.
Small, 7, 2265 (2011).
99. Spin Torque Oscillators and RF currents -“ Modulation, Locking, and Ringing
P. Muduli, Ye. Pogoryelov, Y. Zhou, F. Mancoff, and Johan Åkerman,
Integr. Ferroelectr. 125, 147, (2011).
98. Graded Anisotropy FePtCu films
R.K. Dumas, C.L. Zha, V. Bonanni, Y. Y. Fang, J. W. Lau, J. Nogués, and Johan Åkerman
IEEE Trans. Magn. 47, 1580 (2011).
97. Modulation of Individual and Mutually Synchronized Nanocontact-Based Spin Torque Oscillators
P. K. Muduli, Ye. Pogoryelov, F. Mancoff, and Johan Åkerman
IEEE Trans. Magn. 47, 1575 (2011).
96. Bias dependence of perpendicular spin torque and of free and fixed layer eigenmodes in MgO-based nanopillars
P. K. Muduli, O. G. Heinonen, and Johan Åkerman,
Phys. Rev. B 83, 184410 (2011). (See also arXiv:1101.2401 (2011))
95. Spin-torque oscillator linewidth narrowing under current modulation
Ye. Pogoryelov, P. K. Muduli, S. Bonetti, F. Mancoff, and Johan Åkerman
Appl. Phys. Lett. 98, 192506 (2011). (See also arXiv:1104.3167 (2011))
Selected for APL Research Highlights.
94. Frequency modulation of spin torque oscillator pairs
Ye. Pogoryelov, P. K. Muduli, S. Bonetti, E. Iacocca, F. Mancoff, and Johan Åkerman,
Appl. Phys. Lett. 98, 192501 (2011). (See also arXiv:1007.2305 (2010))
93. [Co/Pd]-NiFe exchange springs with tunable magnetization tilt angle
T. N. Anh Nguyen, Y. Fang, V. Fallahi, N. Benatmane, M. Mohseni, R.K. Dumas, and Johan Åkerman
Appl. Phys. Lett. 98, 172502 (2011).
92. Current induced vortices in multi-nanocontact spin-torque devices
S. R. Sani, J. Persson, S.M. Mohseni, V. Fallahi, J. Åkerman
J. Appl. Phys. 109, 07C913 (2011).
Selected for Vir. J. Nan. Sci. & Tech. 23 (14), 18 (2011).
91. An in-situ anneal study of graded anisotropy FePtCu thin films
Yeyu Fang, R. K. Dumas, C. L. Zha, and Johan Åkerman,
IEEE Magn. Lett. 2, 2114332 (2011).
90. Micromagnetic study of switching boundary of a spin torque nanodevice
Y. Zhou, Johan Åkerman, and J. Sun,
Appl. Phys. Lett. 98, 102501 (2011).
Selected for Vir. J. Nan. Sci. & Tech. 23 (11), 59 (2011).
V. Bonanni, S. Bonetti, T. Pakizeh, Z. Pirzadeh, J. Chen, J. Nogués, P. Vavassori, R. Hillenbrand, J. Åkerman, A. Dmitriev.
Nano Letters, 11, 5333 (2011).
108. Destabilization of serially connected spin-torque oscillators via non-Adlerian dynamics
E. Iacocca and Johan Åkerman,
J. Appl. Phys. 110, 103910 (2011).
107. Temperature dependent interlayer coupling in Ni/Co perpendicular pseudo-spin-valve structures
S. M. Mohseni, R. K. Dumas, Y. Fang, J. W. Lau, S. R. Sani, J. Persson, and Johan Åkerman
Phys. Rev. B 84, 174432 (2011).
106. High frequency operation of a spin-torque oscillator at low field
S. M. Mohseni, S. R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov and Johan Åkerman
Phys. Status Solidi RRL 5, 432 (2011).
105. Nanostructured MnGa Films on Si/SiO2 with 20.5 kOe Room Temperature Coercivity
C. L. Zha, R. K. Dumas, J. W. Lau, S. M. Mohseni, S. R. Sani, I. V. Golosovsky, Å. F. Monsen, J. Nogués, and Johan Åkerman,
J. Appl. Phys. 110, 093902 (2011).
104. Intrinsic frequency doubling in a magnetic tunnel junction-based spin torque oscillator
P. K. Muduli, O. G. Heinonen, and Johan Åkerman,
J. Appl. Phys. 110, 076102 (2011).
103. Direct observation of a propagating spin wave induced by spin-transfer torque
M. Madami, S. Bonetti, G. Consolo, S. Tacchi, G. Carlotti, G. Gubbiotti, F. B. Mancoff, M. A. Yar, and Johan Åkerman,
Nature Nanotechnology 6, 635 (2011)
102. Probing vertically graded anisotropy in FePtCu films
R. K. Dumas, Yeyu Fang, B. J. Kirby, C. L. Zha, V. Bonanni, J. Nogués, and Johan Åkerman,
Phys. Rev. B 84, 054434 (2011).
101. Modulation of single and double spin torque oscillators
P. K. Muduli, Ye. Pogoryelov, G. Consolo, F. Mancoff, and Johan Åkerman,
AIP Conf. Proc. 1347, 318 (2011).
100. Plasmonic Nickel Nanoantennas
J. Chen, P. Albella, Z. Pirzadeh, P. Alonso-González, F. Huth, S. Bonetti, V. Bonanni, J. Åkerman, J. Nogués, P. Vavassori, A. Dmitriev, J. Aizpurua, and R. Hillenbrand.
Small, 7, 2265 (2011).
99. Spin Torque Oscillators and RF currents -“ Modulation, Locking, and Ringing
P. Muduli, Ye. Pogoryelov, Y. Zhou, F. Mancoff, and Johan Åkerman,
Integr. Ferroelectr. 125, 147, (2011).
98. Graded Anisotropy FePtCu films
R.K. Dumas, C.L. Zha, V. Bonanni, Y. Y. Fang, J. W. Lau, J. Nogués, and Johan Åkerman
IEEE Trans. Magn. 47, 1580 (2011).
97. Modulation of Individual and Mutually Synchronized Nanocontact-Based Spin Torque Oscillators
P. K. Muduli, Ye. Pogoryelov, F. Mancoff, and Johan Åkerman
IEEE Trans. Magn. 47, 1575 (2011).
96. Bias dependence of perpendicular spin torque and of free and fixed layer eigenmodes in MgO-based nanopillars
P. K. Muduli, O. G. Heinonen, and Johan Åkerman,
Phys. Rev. B 83, 184410 (2011). (See also arXiv:1101.2401 (2011))
95. Spin-torque oscillator linewidth narrowing under current modulation
Ye. Pogoryelov, P. K. Muduli, S. Bonetti, F. Mancoff, and Johan Åkerman
Appl. Phys. Lett. 98, 192506 (2011). (See also arXiv:1104.3167 (2011))
Selected for APL Research Highlights.
94. Frequency modulation of spin torque oscillator pairs
Ye. Pogoryelov, P. K. Muduli, S. Bonetti, E. Iacocca, F. Mancoff, and Johan Åkerman,
Appl. Phys. Lett. 98, 192501 (2011). (See also arXiv:1007.2305 (2010))
93. [Co/Pd]-NiFe exchange springs with tunable magnetization tilt angle
T. N. Anh Nguyen, Y. Fang, V. Fallahi, N. Benatmane, M. Mohseni, R.K. Dumas, and Johan Åkerman
Appl. Phys. Lett. 98, 172502 (2011).
92. Current induced vortices in multi-nanocontact spin-torque devices
S. R. Sani, J. Persson, S.M. Mohseni, V. Fallahi, J. Åkerman
J. Appl. Phys. 109, 07C913 (2011).
Selected for Vir. J. Nan. Sci. & Tech. 23 (14), 18 (2011).
91. An in-situ anneal study of graded anisotropy FePtCu thin films
Yeyu Fang, R. K. Dumas, C. L. Zha, and Johan Åkerman,
IEEE Magn. Lett. 2, 2114332 (2011).
90. Micromagnetic study of switching boundary of a spin torque nanodevice
Y. Zhou, Johan Åkerman, and J. Sun,
Appl. Phys. Lett. 98, 102501 (2011).
Selected for Vir. J. Nan. Sci. & Tech. 23 (11), 59 (2011).
Publications in 2010 (13 papers)
89. Nanowaveguides and couplers based on hybrid plasmonic modes
J. Tian, Z. Ma, Q. Li, Y. Song, Z. Liu, Q. Yang, C. L. Zha, J. Åkerman, L. Tong, and M. Qiu,
Appl. Phys. Lett. 97, 231121 (2010).
88. Experimental Evidence of Self-Localized and Propagating Spin Wave Modes in Obliquely Magnetized Current-driven Nanocontacts
S. Bonetti, V. Tiberkevich, G. Consolo, G. Finocchio, P. Muduli, F. Mancoff, A. Slavin, and Johan Åkerman,
Phys. Rev. Lett. 105, 217204 (2010). (See also arXiv:0909.3331 (2009)).
Selected for Vir. J. Nan. Sci. & Tech. 22 (22), 13 (2010).
87. First order reversal curve analysis of graded anisotropy FePtCu films
V. Bonanni, Y. Y. Fang, R. K. Dumas, C. L. Zha, S. Bonetti, J. Nogués, and Johan Åkerman,
Appl. Phys. Lett. 97, 202501 (2010).
86. Continuously graded anisotropy in single (Fe53Pt47)100-xCux films
C. L. Zha, R. K. Dumas, Y. Y. Fang, V. Bonanni, J. Nogués, and Johan Åkerman,
Appl. Phys. Lett. 97, 182504 (2010).
85. Oscillatory transient regime in the forced dynamics of a nonlinear auto oscillator
Y. Zhou, V. Tiberkevich, G. Consolo, E. Iacocca, B. Azzerboni, A. Slavin, and Johan Åkerman,
Phys. Rev. B 82, 012408 (2010) (See also arXiv:0912.3650 (2009)).
84. Non-linear frequency and amplitude modulation of a nanocontact-based spin-torque oscillator
P. Muduli, S. Bonetti, Ye. Pogoryelov, G. Consolo, F. Mancoff, and Johan Åkerman,
Phys. Rev. B 81, 140408(R) (2010) (See also arXiv:0910.2819 (2009)).
Selected for Vir. J. Nan. Sci. & Tech. 21 (19), 178 (2010).
83. Exchange-bias-like effects in L1_0 (111)-oriented FePt based pseudo spin valves
C. L. Zha, P. Muduli, Josep Nogués, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072110 (2010).
82. Hole mask colloidal lithography on magnetic multilayers for spin torque applications
S. R. Sani, J. Persson, A. Dmitriev, M. Kall, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072078 (2010).
81. FORC studies of exchange biased NiFe in L1_0(111) FePt-based spin valve
Y. Y. Fang, C. L. Zha, S. Bonetti, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072002 (2010).
80. Pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted anisotropy
C. L. Zha and Johan Åkerman,
J. Phys. Conf. Ser. 200, 052036 (2010).
79. Manifestation of spin-Hall effect in multilayered M/N/M film structures
Y. Pogoryelov and Johan Åkerman,
J. Phys. Conf. Ser. 200, 052023 (2010).
78. Pseudo Spin Valves Using a (112)-textured D0_22 MnGa Fixed Layer
C. L. Zha, R. K. Dumas, J. Persson, S. M. Mohseni, J. Nogués, and Johan Åkerman,
IEEE Magn. Lett. 1, 2500104 (2010) (See also: arXiv:0911.4192 (2009)).
77. Surface-energy triggered phase formation and epitaxy in nanometer-thick Ni1-xPtx silicide films
J. Luo, Z. Qiu, C. L. Zha, Z. Zhang, D. Wu, J. Lu, Johan Åkerman, M. Östling, L. Hultman, S. L. Zhang
Appl. Phys. Lett. 96, 031911 (2010).
J. Tian, Z. Ma, Q. Li, Y. Song, Z. Liu, Q. Yang, C. L. Zha, J. Åkerman, L. Tong, and M. Qiu,
Appl. Phys. Lett. 97, 231121 (2010).
88. Experimental Evidence of Self-Localized and Propagating Spin Wave Modes in Obliquely Magnetized Current-driven Nanocontacts
S. Bonetti, V. Tiberkevich, G. Consolo, G. Finocchio, P. Muduli, F. Mancoff, A. Slavin, and Johan Åkerman,
Phys. Rev. Lett. 105, 217204 (2010). (See also arXiv:0909.3331 (2009)).
Selected for Vir. J. Nan. Sci. & Tech. 22 (22), 13 (2010).
87. First order reversal curve analysis of graded anisotropy FePtCu films
V. Bonanni, Y. Y. Fang, R. K. Dumas, C. L. Zha, S. Bonetti, J. Nogués, and Johan Åkerman,
Appl. Phys. Lett. 97, 202501 (2010).
86. Continuously graded anisotropy in single (Fe53Pt47)100-xCux films
C. L. Zha, R. K. Dumas, Y. Y. Fang, V. Bonanni, J. Nogués, and Johan Åkerman,
Appl. Phys. Lett. 97, 182504 (2010).
85. Oscillatory transient regime in the forced dynamics of a nonlinear auto oscillator
Y. Zhou, V. Tiberkevich, G. Consolo, E. Iacocca, B. Azzerboni, A. Slavin, and Johan Åkerman,
Phys. Rev. B 82, 012408 (2010) (See also arXiv:0912.3650 (2009)).
84. Non-linear frequency and amplitude modulation of a nanocontact-based spin-torque oscillator
P. Muduli, S. Bonetti, Ye. Pogoryelov, G. Consolo, F. Mancoff, and Johan Åkerman,
Phys. Rev. B 81, 140408(R) (2010) (See also arXiv:0910.2819 (2009)).
Selected for Vir. J. Nan. Sci. & Tech. 21 (19), 178 (2010).
83. Exchange-bias-like effects in L1_0 (111)-oriented FePt based pseudo spin valves
C. L. Zha, P. Muduli, Josep Nogués, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072110 (2010).
82. Hole mask colloidal lithography on magnetic multilayers for spin torque applications
S. R. Sani, J. Persson, A. Dmitriev, M. Kall, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072078 (2010).
81. FORC studies of exchange biased NiFe in L1_0(111) FePt-based spin valve
Y. Y. Fang, C. L. Zha, S. Bonetti, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072002 (2010).
80. Pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted anisotropy
C. L. Zha and Johan Åkerman,
J. Phys. Conf. Ser. 200, 052036 (2010).
79. Manifestation of spin-Hall effect in multilayered M/N/M film structures
Y. Pogoryelov and Johan Åkerman,
J. Phys. Conf. Ser. 200, 052023 (2010).
78. Pseudo Spin Valves Using a (112)-textured D0_22 MnGa Fixed Layer
C. L. Zha, R. K. Dumas, J. Persson, S. M. Mohseni, J. Nogués, and Johan Åkerman,
IEEE Magn. Lett. 1, 2500104 (2010) (See also: arXiv:0911.4192 (2009)).
77. Surface-energy triggered phase formation and epitaxy in nanometer-thick Ni1-xPtx silicide films
J. Luo, Z. Qiu, C. L. Zha, Z. Zhang, D. Wu, J. Lu, Johan Åkerman, M. Östling, L. Hultman, S. L. Zhang
Appl. Phys. Lett. 96, 031911 (2010).
Publications in 2009 (11 papers)
76. Zero field precession and hysteretic threshold currents in a spin torque nano-device with tilted polarizer
Yan Zhou, S. Bonetti, C. L. Zha, and Johan Åkerman,
New J. of Phys. 11, 103028 (2009) (See also arXiv:0809.2763 (2008)).
75. Study of pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted magnetocrystalline anisotropy
C. L. Zha and Johan Åkerman,
IEEE Trans. Mag. 45, 3491 (2009).
74. Exchange Bias in L1_0 (111)-oriented FePt all-ferromagnetic pseudo spin valves
C. L. Zha, J. Nogués, and Johan Åkerman,
IEEE Trans. Mag. 45, 3881 (2009).
73. Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1_0 (111)-oriented FePtCu fixed layers
C. L. Zha, Y. Y. Fang, J. Nogués, and Johan Åkerman,
J. Appl. Phys. 106, 053909 (2009).
72. Pseudo spin valves based on L1_0 (111)-oriented FePt fixed layer with tilted anisotropy
C. L. Zha, J. Persson, S. Bonetti, Y. Y. Fang, and Johan Åkerman,
Appl. Phys. Lett. 94, 163108 (2009).
71. Perpendicular Spin Torque Promotes Synchronization of Magnetic Tunnel Junction based Spin Torque Oscillators
Yan Zhou and Johan Åkerman,
Appl. Phys. Lett. 94, 112503 (2009).
70. Spin Torque Oscillator Frequency vs. Magnetic Field Angle: The Prospect of Operation beyond 65 GHz
S. Bonetti, P. Muduli, F. Mancoff, and Johan Åkerman,
Appl. Phys. Lett. 94, 102507 (2009).
69. Capacitance Enhanced Synchronization of Pairs of Spin-Transfer Oscillators
Yan Zhou, S. Bonetti, J. Persson, and Johan Åkerman,
IEEE Trans. Mag. 45, 2421-2423 (2009).
68. Capacitance Effect on Microwave Power Spectra of Spin Torque Oscillator with Thermal Noise
Yan Zhou, F. G. Shin, Bo Guan, and Johan Åkerman,
IEEE Trans. Mag. 45, 2773-2776 (2009).
67. Microwave generation of tilted-polarizer spin torque oscillator
Yan Zhou, C. L. Zha, S. Bonetti, J. Persson, and Johan Åkerman,
J. Appl. Phys. 105, 07D116 (2009).
66. Pseudo spin valve with L1_0 (111)-oriented FePt fixed layer
C. L. Zha, S. Bonetti, J. Persson, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 105, 07E910 (2009).
Yan Zhou, S. Bonetti, C. L. Zha, and Johan Åkerman,
New J. of Phys. 11, 103028 (2009) (See also arXiv:0809.2763 (2008)).
75. Study of pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted magnetocrystalline anisotropy
C. L. Zha and Johan Åkerman,
IEEE Trans. Mag. 45, 3491 (2009).
74. Exchange Bias in L1_0 (111)-oriented FePt all-ferromagnetic pseudo spin valves
C. L. Zha, J. Nogués, and Johan Åkerman,
IEEE Trans. Mag. 45, 3881 (2009).
73. Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1_0 (111)-oriented FePtCu fixed layers
C. L. Zha, Y. Y. Fang, J. Nogués, and Johan Åkerman,
J. Appl. Phys. 106, 053909 (2009).
72. Pseudo spin valves based on L1_0 (111)-oriented FePt fixed layer with tilted anisotropy
C. L. Zha, J. Persson, S. Bonetti, Y. Y. Fang, and Johan Åkerman,
Appl. Phys. Lett. 94, 163108 (2009).
71. Perpendicular Spin Torque Promotes Synchronization of Magnetic Tunnel Junction based Spin Torque Oscillators
Yan Zhou and Johan Åkerman,
Appl. Phys. Lett. 94, 112503 (2009).
70. Spin Torque Oscillator Frequency vs. Magnetic Field Angle: The Prospect of Operation beyond 65 GHz
S. Bonetti, P. Muduli, F. Mancoff, and Johan Åkerman,
Appl. Phys. Lett. 94, 102507 (2009).
69. Capacitance Enhanced Synchronization of Pairs of Spin-Transfer Oscillators
Yan Zhou, S. Bonetti, J. Persson, and Johan Åkerman,
IEEE Trans. Mag. 45, 2421-2423 (2009).
68. Capacitance Effect on Microwave Power Spectra of Spin Torque Oscillator with Thermal Noise
Yan Zhou, F. G. Shin, Bo Guan, and Johan Åkerman,
IEEE Trans. Mag. 45, 2773-2776 (2009).
67. Microwave generation of tilted-polarizer spin torque oscillator
Yan Zhou, C. L. Zha, S. Bonetti, J. Persson, and Johan Åkerman,
J. Appl. Phys. 105, 07D116 (2009).
66. Pseudo spin valve with L1_0 (111)-oriented FePt fixed layer
C. L. Zha, S. Bonetti, J. Persson, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 105, 07E910 (2009).
Publications in 2008 (3 papers)
65. Spin-torque oscillator with tilted fixed layer magnetization
Yan Zhou, C. L. Zha, S. Bonetti, J. Persson, and Johan Åkerman,
Appl. Phys. Lett. 92, 262508 (2008).
64. Tunable intrinsic phase of a spin torque oscillator
Yan Zhou, J. Persson, S. Bonetti, and Johan Åkerman,
Appl. Phys. Lett. 92, 092505 (2008).
63. Temperature and angular dependences of dynamic spin-polarized resonant tunneling in CoFeB/MgO/NiFe junctions
Casey W. Miller, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 103 07A904 (2008).
Yan Zhou, C. L. Zha, S. Bonetti, J. Persson, and Johan Åkerman,
Appl. Phys. Lett. 92, 262508 (2008).
64. Tunable intrinsic phase of a spin torque oscillator
Yan Zhou, J. Persson, S. Bonetti, and Johan Åkerman,
Appl. Phys. Lett. 92, 092505 (2008).
63. Temperature and angular dependences of dynamic spin-polarized resonant tunneling in CoFeB/MgO/NiFe junctions
Casey W. Miller, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 103 07A904 (2008).
Publications in 2007 (11 papers)
62. Impact of Magnetoresistance and Anisotropy on Synchronized Spin Torque Oscillators
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE-NANO 2007. 7th IEEE Conference on Nanotechnology, 233-236 (2007).
61. Tunable Intrinsic Phase Shift Between a Spin Torque Nano-Oscillator and an AC Current
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE-NANO 2007. 7th IEEE Conference on Nanotechnology, 229-232 (2007).
60. Impact of Magnetoresistance and Anisotropy on Synchronized Spin Torque Oscillators
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE Review on Advances in Micro, Nano and Molecular Systems, in press (2007).
59. Tunable Intrinsic Phase Shift Between a Spin Torque Nano-Oscillator and an AC Current
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE Review on Advances in Micro, Nano and Molecular Systems, in press (2007).
58. Intrinsic phase shift and novel dynamic magnetization states of a spin torque oscillator under ac current injection
Yan Zhou, J. Persson, and Johan Åkerman,
Mater. Res. Soc. Symp. Proc. 994 0998-J02-02 (2007).
57. Impact of Device Variability and Circuit Phase Shift in Synchronized Spin Torque Oscillators
Johan Persson, Yan Zhou, and Johan Åkerman,
Mater. Res. Soc. Symp. Proc. 994 0998-J02-06 (2007).
56. Separation of exchange anisotropy and magnetocrystalline anisotropy in Co/CoO bilayers by means of ac susceptibility measurements
Johan Åkerman, V. Ström, K. V. Rao, and E. Dan Dahlberg,
Phys. Rev. B 76, 144416 (2007).
55. Dynamic Spin-Polarized Resonant Tunneling in Magnetic Tunnel Junctions
Casey W. Miller, Zhi-Pan Li, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, and Johan Åkerman
Phys. Rev. Lett 99, 047206 (2007).
54. Intrinsic phase shift between a spin torque oscillator and an alternating current
Yan Zhou, J. Persson, and Johan Åkerman,
J. Appl. Phys. 101, 09A510 (2007)).
53. Phase Locked Spin Torque Oscillators: Impact of Device Variability and Time Delay
J. Persson, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 101, 09A503 (2007).
52. Impact of interfacial roughness on tunneling conductance and extracted barrier parameters
Casey W. Miller, Z. Li, Johan Åkerman, Ivan K. Schuller,
Appl. Phys. Lett. 90, 043513 (2007).
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE-NANO 2007. 7th IEEE Conference on Nanotechnology, 233-236 (2007).
61. Tunable Intrinsic Phase Shift Between a Spin Torque Nano-Oscillator and an AC Current
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE-NANO 2007. 7th IEEE Conference on Nanotechnology, 229-232 (2007).
60. Impact of Magnetoresistance and Anisotropy on Synchronized Spin Torque Oscillators
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE Review on Advances in Micro, Nano and Molecular Systems, in press (2007).
59. Tunable Intrinsic Phase Shift Between a Spin Torque Nano-Oscillator and an AC Current
Yan Zhou, J. Persson, and Johan Åkerman,
IEEE Review on Advances in Micro, Nano and Molecular Systems, in press (2007).
58. Intrinsic phase shift and novel dynamic magnetization states of a spin torque oscillator under ac current injection
Yan Zhou, J. Persson, and Johan Åkerman,
Mater. Res. Soc. Symp. Proc. 994 0998-J02-02 (2007).
57. Impact of Device Variability and Circuit Phase Shift in Synchronized Spin Torque Oscillators
Johan Persson, Yan Zhou, and Johan Åkerman,
Mater. Res. Soc. Symp. Proc. 994 0998-J02-06 (2007).
56. Separation of exchange anisotropy and magnetocrystalline anisotropy in Co/CoO bilayers by means of ac susceptibility measurements
Johan Åkerman, V. Ström, K. V. Rao, and E. Dan Dahlberg,
Phys. Rev. B 76, 144416 (2007).
55. Dynamic Spin-Polarized Resonant Tunneling in Magnetic Tunnel Junctions
Casey W. Miller, Zhi-Pan Li, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, and Johan Åkerman
Phys. Rev. Lett 99, 047206 (2007).
54. Intrinsic phase shift between a spin torque oscillator and an alternating current
Yan Zhou, J. Persson, and Johan Åkerman,
J. Appl. Phys. 101, 09A510 (2007)).
53. Phase Locked Spin Torque Oscillators: Impact of Device Variability and Time Delay
J. Persson, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 101, 09A503 (2007).
52. Impact of interfacial roughness on tunneling conductance and extracted barrier parameters
Casey W. Miller, Z. Li, Johan Åkerman, Ivan K. Schuller,
Appl. Phys. Lett. 90, 043513 (2007).
Publications in 2006 (3 papers)
51. Origin of the breakdown of Wentzel-Kramers-Brillouin-based tunneling models
Casey W. Miller, Zhi.-Pan. Li, Ivan K. Schuller, R. Dave, J. M. Slaughter, Johan Åkerman
Phys. Rev. B 72, 212404 (2006).
50. Intrinsic Reliability of AlOx-Based Magnetic Tunnel Junctions
Johan Åkerman, M. DeHerrera, J.M. Slaughter, R. Dave, J.J. Sun, J.T. Martin, S. Tehrani,
IEEE Trans. Magn. 42, 2661-2663 (2006).
49. MgO-Based Tunnel Junction Material for High-Speed Toggle Magnetic Random Access Memory
R. Dave, G. Steiner, J. M. Slaughter, J. J. Sun, B. Craigo, S. Pietambaram, K. Smith, G. Grynkewich, M. DeHerrera, J. Åkerman, S. Tehrani,
IEEE Trans. Magn. 42, 1935-1939 (2006).
Casey W. Miller, Zhi.-Pan. Li, Ivan K. Schuller, R. Dave, J. M. Slaughter, Johan Åkerman
Phys. Rev. B 72, 212404 (2006).
50. Intrinsic Reliability of AlOx-Based Magnetic Tunnel Junctions
Johan Åkerman, M. DeHerrera, J.M. Slaughter, R. Dave, J.J. Sun, J.T. Martin, S. Tehrani,
IEEE Trans. Magn. 42, 2661-2663 (2006).
49. MgO-Based Tunnel Junction Material for High-Speed Toggle Magnetic Random Access Memory
R. Dave, G. Steiner, J. M. Slaughter, J. J. Sun, B. Craigo, S. Pietambaram, K. Smith, G. Grynkewich, M. DeHerrera, J. Åkerman, S. Tehrani,
IEEE Trans. Magn. 42, 1935-1939 (2006).
Publications in 2005 (4 papers)
48. Reliability of 4-Mbit MRAM
J. Åkerman, P. Brown, D. Gajewski, M. Griswold, J. Janesky, M. Martin, H. Mekonnen, J. J. Nahas, S. Pietambaram, J. M. Slaughter, S. Tehrani,
IEEE Proceedings of 43rd International Reliability Physics Symposium, 163 – 167 (2005).
47. Toward a Universal Memory
Johan Åkerman,
Science 308, 508-510 (2005).
46. Reliability of 4-Mbit toggle MRAM
J. Åkerman, P. Brown, B. Butcher, R. Dave, M. DeHerrera, M. Durlam, B. Engel, E. Fuchs, M. Griswold, G. Grynkewich, J. Janesky, J. Martin, J. Nahas, S. Pietambaram, N. Rizzo, J. Slaughter, K. Smith, J. Sun, and S. Tehrani,
MRS Symposium Proceedings 830, 191-200 (2005).
45. A 4-Mbit Toggle MRAM Based on a Novel Bit and Switching Method
B.N. Engel, J. Åkerman, B. Butcher, R.W. Dave, M. Deherrera, M. Durlam, G. Grynkewich, J. Janesky, S.V. Pietambaram, N.D. Rizzo, J.M. Slaughter, K. Smith, J.J. Sun, And S. Tehrani,
IEEE Trans. Magn. 41, 132-136 (2005).
J. Åkerman, P. Brown, D. Gajewski, M. Griswold, J. Janesky, M. Martin, H. Mekonnen, J. J. Nahas, S. Pietambaram, J. M. Slaughter, S. Tehrani,
IEEE Proceedings of 43rd International Reliability Physics Symposium, 163 – 167 (2005).
47. Toward a Universal Memory
Johan Åkerman,
Science 308, 508-510 (2005).
46. Reliability of 4-Mbit toggle MRAM
J. Åkerman, P. Brown, B. Butcher, R. Dave, M. DeHerrera, M. Durlam, B. Engel, E. Fuchs, M. Griswold, G. Grynkewich, J. Janesky, J. Martin, J. Nahas, S. Pietambaram, N. Rizzo, J. Slaughter, K. Smith, J. Sun, and S. Tehrani,
MRS Symposium Proceedings 830, 191-200 (2005).
45. A 4-Mbit Toggle MRAM Based on a Novel Bit and Switching Method
B.N. Engel, J. Åkerman, B. Butcher, R.W. Dave, M. Deherrera, M. Durlam, G. Grynkewich, J. Janesky, S.V. Pietambaram, N.D. Rizzo, J.M. Slaughter, K. Smith, J.J. Sun, And S. Tehrani,
IEEE Trans. Magn. 41, 132-136 (2005).
Publications 2004 (3 papers)
44. Nonvolatile Magnetoresistive Random Access Memory Based Upon Magnetic Tunnel Junctions
G. Grynkewich, J. Åkerman, P. Brown, B. Butcher, R.W. Dave, M. DeHerrera, M. Durlam, B.N. Engel, J. Janesky, N.D. Rizzo, J.M. Slaughter, K. Smith, and S. Tehrani,
MRS Bulletin, 29, 818 (2004).
43. Demonstrated Reliability of 4Mb MRAM
J. Åkerman, P. Brown, M. DeHerrera, M. Durlam, E. Fuchs, D. Gajewski, M. Griswold, J. Janesky, J. Nahas, and S. Tehrani,
IEEE Trans. Dev. Mat. Rel, 4, 428-35 (2004).
42. A 0.18 um 4Mb MRAM
M. Durlam, D. Addie, J. Åkerman, B. Butcher, P. Brown, J. Chan, M. DeHerrera, B. Engel, B. Feil, G. Grynkewich, M. Johnson, K. Kyler, J. Molla, J. Martin, K. Nagel, J. Ren, N. Rizzo, T. Rodriguez, L. Savtchenko, J. Salter, J. Slaughter, K. Smith, M. Lien, K. Papworth, P. Shah, W. Qin, R. Williams, L. Wise, and S. Tehrani,
ICICDT ’04, pp.27-30, (2004).
G. Grynkewich, J. Åkerman, P. Brown, B. Butcher, R.W. Dave, M. DeHerrera, M. Durlam, B.N. Engel, J. Janesky, N.D. Rizzo, J.M. Slaughter, K. Smith, and S. Tehrani,
MRS Bulletin, 29, 818 (2004).
43. Demonstrated Reliability of 4Mb MRAM
J. Åkerman, P. Brown, M. DeHerrera, M. Durlam, E. Fuchs, D. Gajewski, M. Griswold, J. Janesky, J. Nahas, and S. Tehrani,
IEEE Trans. Dev. Mat. Rel, 4, 428-35 (2004).
42. A 0.18 um 4Mb MRAM
M. Durlam, D. Addie, J. Åkerman, B. Butcher, P. Brown, J. Chan, M. DeHerrera, B. Engel, B. Feil, G. Grynkewich, M. Johnson, K. Kyler, J. Molla, J. Martin, K. Nagel, J. Ren, N. Rizzo, T. Rodriguez, L. Savtchenko, J. Salter, J. Slaughter, K. Smith, M. Lien, K. Papworth, P. Shah, W. Qin, R. Williams, L. Wise, and S. Tehrani,
ICICDT ’04, pp.27-30, (2004).
Publications 2003
41. A 0.18 um 4Mb MRAM
M. Durlam, D. Addie, J. Åkerman, B. Butcher, P. Brown, J. Chan, M. DeHerrera, B. Engel, B. Feil, G. Grynkewich, M. Johnson, K. Kyler, J. Molla, J. Martin, K. Nagel, J. Ren, N. Rizzo, T. Rodriguez, L. Savtchenko, J. Salter, J. Slaughter, K. Smith, M. Lien, K. Papworth, P. Shah, W. Qin, R. Williams, L. Wise, S. Tehrani,
IEDM '03 Technical Digest, pp. 34.6.1 - 34.6.3, (2003)
40. Flux pinning by regular nanostructures in Nb thin films: Magnetic vs. structural effects
M. I. Montero, Johan J. Åkerman, A. Varilci, and Ivan K. Schuller,
Europhys. Lett. 63, 118-124 (2003).
39. Origin of temperature dependence in tunneling magnetoresistance
Johan J. Åkerman, I. V. Roshchin, J. M. Slaughter, R. W. Dave, and I. K. Schuller,
Europhys. Lett. 63, 104-110 (2003).
38. The oxidation state at tunnel junction interfaces
X. Batlle, B. J. Hattink, A. Labarta, Johan J. Åkerman, R. Escudero, and Ivan K. Schuller,
J. Magn. Magn. Mat. 260, 78-83 (2003).
M. Durlam, D. Addie, J. Åkerman, B. Butcher, P. Brown, J. Chan, M. DeHerrera, B. Engel, B. Feil, G. Grynkewich, M. Johnson, K. Kyler, J. Molla, J. Martin, K. Nagel, J. Ren, N. Rizzo, T. Rodriguez, L. Savtchenko, J. Salter, J. Slaughter, K. Smith, M. Lien, K. Papworth, P. Shah, W. Qin, R. Williams, L. Wise, S. Tehrani,
IEDM '03 Technical Digest, pp. 34.6.1 - 34.6.3, (2003)
40. Flux pinning by regular nanostructures in Nb thin films: Magnetic vs. structural effects
M. I. Montero, Johan J. Åkerman, A. Varilci, and Ivan K. Schuller,
Europhys. Lett. 63, 118-124 (2003).
39. Origin of temperature dependence in tunneling magnetoresistance
Johan J. Åkerman, I. V. Roshchin, J. M. Slaughter, R. W. Dave, and I. K. Schuller,
Europhys. Lett. 63, 104-110 (2003).
38. The oxidation state at tunnel junction interfaces
X. Batlle, B. J. Hattink, A. Labarta, Johan J. Åkerman, R. Escudero, and Ivan K. Schuller,
J. Magn. Magn. Mat. 260, 78-83 (2003).
Publications 2002
37. Progress towards the Commercialization of MRAM
Saied Tehrani, Mark Durlam, Johan J. Åkerman, John Salter, Jon Slaughter, Jason Janesky, Brad Engel, and Nick Rizzo,
Nikkei Electronics, November 18 Issue, p.127-138, (2002).
36. Kinetics of Sub-Surface Hydrogen adsorbed on Niobium: Thermal Desorption Studies
A. L. Cabrera, J. Espinosa-Gangas, Johan J. Åkerman, and Ivan. K. Schuller,
J. Mater. Res. 17, 2698-2704 (2002).
35. Nanostructures and the Proximity Effect
M.I. Montero, Kai Liu, O.M. Stoll, A. Hoffmann, Ivan K. Schuller, Johan J. Åkerman, J.I. Martin, J.L. Vicent, S.M. Baker, T.P. Russell, C. Leighton and J. Nogués,
J. Phys. D: Appl. Phys. 35, 2398 (2002).
34. Low field vortex dynamics in various High-Tc thin films
Johan J. Åkerman and K. V. Rao,
Pramana J. Phys, 58, 985 (2002)
33. Quantitative XPS study of tunnel junctions: Al oxidation in Nb/Al wedge bilayers
X. Batlle, B. J. Hattink, A. Labarta, Johan J. Åkerman, R. Escudero, and Ivan K. Schuller,
J. Appl. Phys. 91, 10163 (2002).
32. Dynamics of dilute vortex ensembles in various High-Tc thin films
Johan J. Åkerman and K. V. Rao,
J. Appl. Phys. 91, 7137 (2002).
31. Collective dynamics of highly dilute vortex ensembles in YBa2Cu3O7-d thin films
Johan J. Åkerman and K. V. Rao,
Phys. Rev. B 65, 134525 (2002).
30. Hysteresis and fractional matching in Nb films deposited on arrays of magnetic dots
O. Stoll, M. Montero, J. Guimpel, Johan J. Åkerman, and Ivan. K. Schuller,
Phys. Rev. B 65, 104518 (2002).
29. Upper bound for the magnetic proximity effect extracted from Brillouin Light Scattering,
Johan J. Åkerman, C. Leighton, Ivan. K. Schuller, I. Guedes, M. Grimsditch,
Phys. Rev. B 65, 104432 (2002).
28. Criteria for ferromagnetic-insulator-ferromagnetic tunneling
Johan J. Åkerman, R. Escudero, C. Leighton, S. Kim, D. A. Rabson, R. W. Dave, J. M. Slaughter, and Ivan K. Schuller,
J. Magn. Magn. Mat. 240, 86 (2002).
Saied Tehrani, Mark Durlam, Johan J. Åkerman, John Salter, Jon Slaughter, Jason Janesky, Brad Engel, and Nick Rizzo,
Nikkei Electronics, November 18 Issue, p.127-138, (2002).
36. Kinetics of Sub-Surface Hydrogen adsorbed on Niobium: Thermal Desorption Studies
A. L. Cabrera, J. Espinosa-Gangas, Johan J. Åkerman, and Ivan. K. Schuller,
J. Mater. Res. 17, 2698-2704 (2002).
35. Nanostructures and the Proximity Effect
M.I. Montero, Kai Liu, O.M. Stoll, A. Hoffmann, Ivan K. Schuller, Johan J. Åkerman, J.I. Martin, J.L. Vicent, S.M. Baker, T.P. Russell, C. Leighton and J. Nogués,
J. Phys. D: Appl. Phys. 35, 2398 (2002).
34. Low field vortex dynamics in various High-Tc thin films
Johan J. Åkerman and K. V. Rao,
Pramana J. Phys, 58, 985 (2002)
33. Quantitative XPS study of tunnel junctions: Al oxidation in Nb/Al wedge bilayers
X. Batlle, B. J. Hattink, A. Labarta, Johan J. Åkerman, R. Escudero, and Ivan K. Schuller,
J. Appl. Phys. 91, 10163 (2002).
32. Dynamics of dilute vortex ensembles in various High-Tc thin films
Johan J. Åkerman and K. V. Rao,
J. Appl. Phys. 91, 7137 (2002).
31. Collective dynamics of highly dilute vortex ensembles in YBa2Cu3O7-d thin films
Johan J. Åkerman and K. V. Rao,
Phys. Rev. B 65, 134525 (2002).
30. Hysteresis and fractional matching in Nb films deposited on arrays of magnetic dots
O. Stoll, M. Montero, J. Guimpel, Johan J. Åkerman, and Ivan. K. Schuller,
Phys. Rev. B 65, 104518 (2002).
29. Upper bound for the magnetic proximity effect extracted from Brillouin Light Scattering,
Johan J. Åkerman, C. Leighton, Ivan. K. Schuller, I. Guedes, M. Grimsditch,
Phys. Rev. B 65, 104432 (2002).
28. Criteria for ferromagnetic-insulator-ferromagnetic tunneling
Johan J. Åkerman, R. Escudero, C. Leighton, S. Kim, D. A. Rabson, R. W. Dave, J. M. Slaughter, and Ivan K. Schuller,
J. Magn. Magn. Mat. 240, 86 (2002).
Publications in 2001
27. Tunneling criteria for magnetic-insulator-magnetic structures
Johan J. Åkerman, Ivan K. Schuller, J. M. Slaughter, and Renu Whig Dave,
Appl. Phys. Lett. 79, 3104 (2001).
26. Re-entrant behavior of low-field flux creep in c-axis Hg-1212 thin films
Johan J. Åkerman, S. H. Yun, U. O. Karlsson, and K. V. Rao,
Phys. Rev. B 64, 184520 (2001).
25. Two-stage crossover from thermal to quantum flux creep of dilute vortex ensembles in various high-Tc superconducting thin films
Johan J. Åkerman, S. H. Yun, U. O. Karlsson, E. Venturini, M. Siegal, and K. V. Rao,
Phys. Rev. B 64, 094509 (2001).
24. Dislocation-mediated creep of highly separated vortices in a-axis oriented Hg-1212 thin films
Johan J. Åkerman, S. H. Yun, U. O. Karlsson, and K. V. Rao,
Phys. Rev. B 64, 024526 (2001).
23. Pinholes may mimic tunneling
D. Rabson, B.J. Jönsson-Åkerman, A. Romero, R. Escudero, C. Leighton, S. H. Kim, and Ivan. K. Schuller,
J. Appl. Phys. 89, 2786 (2001).
Johan J. Åkerman, Ivan K. Schuller, J. M. Slaughter, and Renu Whig Dave,
Appl. Phys. Lett. 79, 3104 (2001).
26. Re-entrant behavior of low-field flux creep in c-axis Hg-1212 thin films
Johan J. Åkerman, S. H. Yun, U. O. Karlsson, and K. V. Rao,
Phys. Rev. B 64, 184520 (2001).
25. Two-stage crossover from thermal to quantum flux creep of dilute vortex ensembles in various high-Tc superconducting thin films
Johan J. Åkerman, S. H. Yun, U. O. Karlsson, E. Venturini, M. Siegal, and K. V. Rao,
Phys. Rev. B 64, 094509 (2001).
24. Dislocation-mediated creep of highly separated vortices in a-axis oriented Hg-1212 thin films
Johan J. Åkerman, S. H. Yun, U. O. Karlsson, and K. V. Rao,
Phys. Rev. B 64, 024526 (2001).
23. Pinholes may mimic tunneling
D. Rabson, B.J. Jönsson-Åkerman, A. Romero, R. Escudero, C. Leighton, S. H. Kim, and Ivan. K. Schuller,
J. Appl. Phys. 89, 2786 (2001).
Publications in 2000
22. XPS Analysis of Thin Insulating Barriers in Magnetic Tunnel Junctions
X. Batlle, B.J. Hattnik, A. Labarta, B. J. Jönsson-Åkerman, R. Escudero and Ivan K. Schuller,
Magnetic Storage Systems Beyond 2000", G. C. Hadjipanayis, ed. (Kluwer Academic Publishers, The Netherlands), (2000)
21. Scaling between superconducting critical temperature and structural coherence length in YBa2Cu3O6.9 films
A. Gauzzi, B.J. Jönsson-Åkerman, A. Clerc-Dubois and D. Pavuna,
Europhys. Lett. 51, 667 (2000).
20. Reliability of I-V characteristics as an indicator of tunnel-junction barrier quality
B.J. Jönsson-Åkerman, R. Escudero, C. Leighton, S. H. Kim, Ivan. K. Schuller, and D. Rabson,
Appl. Phys. Lett. 77, 1870 (2000).
19. Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration
C. Leighton, J. Nogués, B. J. Jönsson-Åkerman and Ivan K. Schuller,
Phys. Rev. Lett 84, 3466 (2000).
18. Very high resolution measurement of the penetration depth of superconductors by a novel single-coil inductance technique
A Gauzzi, J. Le Cochec, G. Lamura, B. J. Jönsson-Åkerman, V. A. Gasparov, F. R. Ladan, B. Placais, P. A. Probst, D. Pavuna and J. Bok,
Rev. Sci. Instrum. 71, 2147 (2000).
X. Batlle, B.J. Hattnik, A. Labarta, B. J. Jönsson-Åkerman, R. Escudero and Ivan K. Schuller,
Magnetic Storage Systems Beyond 2000", G. C. Hadjipanayis, ed. (Kluwer Academic Publishers, The Netherlands), (2000)
21. Scaling between superconducting critical temperature and structural coherence length in YBa2Cu3O6.9 films
A. Gauzzi, B.J. Jönsson-Åkerman, A. Clerc-Dubois and D. Pavuna,
Europhys. Lett. 51, 667 (2000).
20. Reliability of I-V characteristics as an indicator of tunnel-junction barrier quality
B.J. Jönsson-Åkerman, R. Escudero, C. Leighton, S. H. Kim, Ivan. K. Schuller, and D. Rabson,
Appl. Phys. Lett. 77, 1870 (2000).
19. Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration
C. Leighton, J. Nogués, B. J. Jönsson-Åkerman and Ivan K. Schuller,
Phys. Rev. Lett 84, 3466 (2000).
18. Very high resolution measurement of the penetration depth of superconductors by a novel single-coil inductance technique
A Gauzzi, J. Le Cochec, G. Lamura, B. J. Jönsson-Åkerman, V. A. Gasparov, F. R. Ladan, B. Placais, P. A. Probst, D. Pavuna and J. Bok,
Rev. Sci. Instrum. 71, 2147 (2000).
Publications in 1999
17. Frequency and ac field scaling of the non linear ac susceptibility of a HgBa2CaCu2Ox
B. J. Jönsson-Åkerman, K. V. Rao and E. H. Brandt,
Phys. Rev. B 60, 14913 (1999).
16. Growth of a-axis-oriented HgBa2CaCu2Ox thin films by rapid quenching
S. H. Yun, U. O. Karlsson, B. J. Jönsson, K. V. Rao, L. D. Madsen,
J. Mater. Res. 14, R3181 (1999)
15. An Efficient AC Susceptibility Technique to Study Flux Creep in HTS Thin Films
B. J. Jönsson, K. V. Rao,
IEEE Trans. Appl. Supercond. 9, 2639 (1999)
14. Iron Nanoparticles in X and Y Zeolites
K. Lázár, H. K. Beyer, G. Onyestyák, B. J. Jönsson, L. K. Varga and S. Pronier,
Nanostructured Materials 12 155, (1999)
B. J. Jönsson-Åkerman, K. V. Rao and E. H. Brandt,
Phys. Rev. B 60, 14913 (1999).
16. Growth of a-axis-oriented HgBa2CaCu2Ox thin films by rapid quenching
S. H. Yun, U. O. Karlsson, B. J. Jönsson, K. V. Rao, L. D. Madsen,
J. Mater. Res. 14, R3181 (1999)
15. An Efficient AC Susceptibility Technique to Study Flux Creep in HTS Thin Films
B. J. Jönsson, K. V. Rao,
IEEE Trans. Appl. Supercond. 9, 2639 (1999)
14. Iron Nanoparticles in X and Y Zeolites
K. Lázár, H. K. Beyer, G. Onyestyák, B. J. Jönsson, L. K. Varga and S. Pronier,
Nanostructured Materials 12 155, (1999)
Publications in 1998
13. Reduction of Iron Ions to the Metallic State in X and Y Zeolites by Sodium Azide
H. K. Beyer, G. Onyestyák, B. J. Jönsson, K. Matusek and K. Lázár,
Material Research Society, Proceedings of the 12th International Zeolite Conference IV 2875 (1998)
12. Effect of quenching temperature on the growth of a-axis oriented HgBa2CaCu2Ox thin films
S. H. Yun, U. O. Karlsson, B. J. Jönsson, K. V. Rao and L. D. Madsen,
SPIE Proc. 3481 (1998)
11. Method to extract the critical current density and flux creep exponent in High-Tc thin films using ac susceptibility measurements
B.J. Jönsson, K. V. Rao, S. H. Yun and U. O. Karlsson,
Phys. Rev. B 58, 5862 (1998).
10. Measurements of the Ferromagnetic/Antiferromagnetic Exchange Coupling Energy in Co/CoO and Fe/FeF2 Layers
E. D. Dahlberg, B. Miller, B. Hill, B. J. Jönsson, V. Ström, K. V. Rao, J. Nogués and I. K. Schuller,
J. Appl. Phys. 83, 6893 (1998).
H. K. Beyer, G. Onyestyák, B. J. Jönsson, K. Matusek and K. Lázár,
Material Research Society, Proceedings of the 12th International Zeolite Conference IV 2875 (1998)
12. Effect of quenching temperature on the growth of a-axis oriented HgBa2CaCu2Ox thin films
S. H. Yun, U. O. Karlsson, B. J. Jönsson, K. V. Rao and L. D. Madsen,
SPIE Proc. 3481 (1998)
11. Method to extract the critical current density and flux creep exponent in High-Tc thin films using ac susceptibility measurements
B.J. Jönsson, K. V. Rao, S. H. Yun and U. O. Karlsson,
Phys. Rev. B 58, 5862 (1998).
10. Measurements of the Ferromagnetic/Antiferromagnetic Exchange Coupling Energy in Co/CoO and Fe/FeF2 Layers
E. D. Dahlberg, B. Miller, B. Hill, B. J. Jönsson, V. Ström, K. V. Rao, J. Nogués and I. K. Schuller,
J. Appl. Phys. 83, 6893 (1998).
Publications in 1997
9. Determination of exchange anisotropy by means of ac susceptometry in Co/CoO bilayersâ€ÂÂ
Valter Ström, B.J. Jönsson, K.V. Rao and E. Dan Dahlberg,
J. Appl. Phys. 81, 5003 (1997)
Valter Ström, B.J. Jönsson, K.V. Rao and E. Dan Dahlberg,
J. Appl. Phys. 81, 5003 (1997)
Publications in 1996
8. Critical length of disorder for the onset of localization in YBa2Cu3O6.9 films
A. Gauzzi, B. J. Jönsson, A. Clerc-Dubois and D. Pavuna,
SPIE Proceedings Vol. 2697 (1996)
7. Wavelength Modulations of the Kerr-Rotation Angle for Pd/(Pt/Co/Pt) Modulated Multilayers Grown on Oxidized Si.
Y. Xiao, J. Xu, B. J. Jönsson, K. V. Rao, C. Uher, and F. L. Terry,
J. Magn. Soc. Jpn. 401 (1996)
6. Magnetic, Anisotropy and Magneto-Optic Properties of (Co/V)n Multilayers.
L. Driouch, R. Krishnan, M. Porte, B. J. Jönsson, K. V. Rao and M. Tessier,
J. Magn. Soc. Jpn. (1996)
5. Magnetic Properties of Glassy Fe91-xZr7B2Nix (x=0, 5, 10, 15) Alloys
K.S. Kim, V. Ström, B. J. Jönsson, L. Driouch, S. C. Yu and K.V. Rao,
IEEE Trans. on Magn. 32, 5148 (1996) .
4. Superconducting Properties of Hg-1223 Prepared by using Fluorides.
B.J. Jönsson, T. Turkki, V. Ström, Z. Iqbal and K.V. Rao,
J. Appl. Phys. 79, 6583 (1996).
3. Oxidation States and Magnetism of Fe-nanoparticles Prepared by a Laser Evaporation Technique.
B. J. Jönsson, T. Turkki, V. Ström, M. S. El-shall and K.V. Rao,
J. Appl. Phys. 79 5063, (1996)
A. Gauzzi, B. J. Jönsson, A. Clerc-Dubois and D. Pavuna,
SPIE Proceedings Vol. 2697 (1996)
7. Wavelength Modulations of the Kerr-Rotation Angle for Pd/(Pt/Co/Pt) Modulated Multilayers Grown on Oxidized Si.
Y. Xiao, J. Xu, B. J. Jönsson, K. V. Rao, C. Uher, and F. L. Terry,
J. Magn. Soc. Jpn. 401 (1996)
6. Magnetic, Anisotropy and Magneto-Optic Properties of (Co/V)n Multilayers.
L. Driouch, R. Krishnan, M. Porte, B. J. Jönsson, K. V. Rao and M. Tessier,
J. Magn. Soc. Jpn. (1996)
5. Magnetic Properties of Glassy Fe91-xZr7B2Nix (x=0, 5, 10, 15) Alloys
K.S. Kim, V. Ström, B. J. Jönsson, L. Driouch, S. C. Yu and K.V. Rao,
IEEE Trans. on Magn. 32, 5148 (1996) .
4. Superconducting Properties of Hg-1223 Prepared by using Fluorides.
B.J. Jönsson, T. Turkki, V. Ström, Z. Iqbal and K.V. Rao,
J. Appl. Phys. 79, 6583 (1996).
3. Oxidation States and Magnetism of Fe-nanoparticles Prepared by a Laser Evaporation Technique.
B. J. Jönsson, T. Turkki, V. Ström, M. S. El-shall and K.V. Rao,
J. Appl. Phys. 79 5063, (1996)
Publications in 1995
2. The Low Temperature Dependance of Magnetization and AC Susceptibility of Glassy Fe91-xZr7B2Nix (x=0, 5, 10, 15) Alloys
V. Ström, K.S. Kim, B.J. Jönsson, S.C. Yu, A. Inoue and K.V. Rao,
J. Korean Magn. Soc. 5, (1995)
1. Magnetism of Nanophase Iron Particles Laser Evaporated in a Controlled Oxygen Atmosphere
T. Turkki, B.J. Jönsson, V. Ström, H. Medelius, M.S. El-shall and K.V. Rao,
J. Korean Magn. Soc. 5, 745 (1995)
V. Ström, K.S. Kim, B.J. Jönsson, S.C. Yu, A. Inoue and K.V. Rao,
J. Korean Magn. Soc. 5, (1995)
1. Magnetism of Nanophase Iron Particles Laser Evaporated in a Controlled Oxygen Atmosphere
T. Turkki, B.J. Jönsson, V. Ström, H. Medelius, M.S. El-shall and K.V. Rao,
J. Korean Magn. Soc. 5, 745 (1995)