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Bengt Johan Åkerman
Professor
Department of-
Magnetic droplet soliton
pairs
Jiang Sheng , Sunjae Chung, Martina Ahlberg, Andreas Frisk, Roman Khymyn, Q. Tuan Le, H. Mazraati, Afshin Houshang, O. Heinonen, Johan Åkerman
NATURE COMMUNICATIONS - 2024 -
Generation of skyrmions by combining thermal and spin-orbit torque: breaking half skyrmions into
skyrmions
Sheng Yang, Laichuan Shen, Yuelei Zhao, Kai Wu, Xiaoguang Li, Ka Shen, Senfu Zhang, Xiaohong Xu, Johan Åkerman, Yan Zhou
NANOSCALE - 2024 -
Global biasing using a hardware-based artificial Zeeman term in spinwave Ising
machines
Victor Hugo González, Artem Litvinenko, Roman Khymyn, Johan Åkerman
APPLIED PHYSICS LETTERS - 2024 -
Observation of higher-order contribution to anisotropic magnetoresistance of thin Pt/[Co/Pt] multilayered
films
Wen-Bin Wu, Julia Kasiuk, Janusz Przewoznik, Czeslaw Kapusta, Ivan Svito, Dang Thanh Tran, Hung Manh Do, Hung Manh Dinh, Johan Åkerman, Thi Ngoc Anh Nguyen
APPLIED SURFACE SCIENCE - 2024 -
Identifying and Exploring Synthetic Antiferromagnetic
Skyrmions
Y. L. Zhao, S. Yang, K. Wu, S. Li, Y. Gao, H. Y. Hao, X. C. Zhang, S. G. Wang, Q. F. Liu, S. F. Zhang, Z. Q. Chu, Johan Åkerman, Y. Zhou
Advanced Functional Materials - 2023 -
Fundamentally Different Magnetoresistance Mechanisms in Related Co/Pd and Co/Pt Multilayers for Spintronic
Applications
W. -B. Wu, J. Kasiuk, J. Przewoznik, Cz. Kapusta, I. Svito, K. Tung Do, T. Huong Nguyen, H. Manh Dinh, Johan Åkerman, T. N. Anh Nguyen
MATERIALS TRANSACTIONS - 2023 -
A spinwave Ising
machine
Artem Litvinenko, Roman Khymyn, Victor Hugo González, Roman Ovcharov, Ahmad Awad, V. Tyberkevych, A. Slavin, Johan Åkerman
Communications Physics - 2023 -
Robust Mutual Synchronization in Long Spin Hall Nano-oscillator
Chains
Akash Kumar, H. Fulara, Roman Khymyn, Artem Litvinenko, M. Zahedinejad, M. Rajabali, Xiaotian Zhao, Nilamani Behera, Afshin Houshang, Ahmad Awad, Johan Åkerman
Nano Letters - 2023 -
Injection Locking of Linearlike and Soliton Spin-Wave Modes in Nanoconstriction Spin Hall
Nano-oscillators
Mona Rajabali, Roman Ovcharov, Roman Khymyn, H. Fulara, Akash Kumar, Artem Litvinenko, Mohammad Zahedinejad, Afshin Houshang, Ahmad Awad, Johan Åkerman
Physical Review Applied - 2023 -
Field-Free High-Frequency Exchange-Spring Spin-Torque Nano-
Oscillators
Jiang Sheng , S. J. Chung, Q. Tuan Le, P. K. J. Wong, W. Zhang, Johan Åkerman
Nano Letters - 2023 -
CMOS Front End for Interfacing Spin-Hall Nano-Oscillators for Neuromorphic Computing in the GHz
Range
R. Fiorelli, E. Peralias, R. Mendez-Romero, M. Rajabali, A. Kumar, M. Zahedinejad, Johan Åkerman, F. Moradi, T. Serrano-Gotarredona, B. Linares-Barranco
Electronics - 2023 -
Spin Pumping in Moderately Perpendicular W/CoFeB/HfO x Thin
Films
Shiva Gaur, Nilamani Behera, Johan Åkerman, Anubhav Raghav
SPIN - 2023 -
Angular Dependent Auto-Oscillations by Spin-Transfer and Spin-Orbit Torques in Three-Terminal Magnetic Tunnel
Junctions
W. L. Cai, Akash Kumar, A. Du, K. W. Shi, R. Xiao, K. H. Cao, J. L. Yin, Johan Åkerman, W. S. Zhao
Ieee Electron Device Letters - 2023 -
A Spinwave Time-Multiplexed Ising
Machine
Artem Litvinenko, Roman Khymyn, Victor Hugo González, Ahmad Awad, Vasyl Tyberkevych, Andrei Slavin, Johan Åkerman
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Antiferromagnetic Droplet Soliton in a Nano-Contact Spin-Transfer Torque
Oscillator
Roman Khymyn, Roman Ovcharov, B. A. Ivanov, Johan Åkerman
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Voltage control of frequency and effective damping in nano-constriction-based spin Hall
nano-oscillators
Victor Hugo González, Roman Khymyn, Himanshu Fulara, Ahmad Awad, Johan Åkerman
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Ultra-low-current Spin Hall
Nano-oscillators
Nilamani Behera, Avinash Kumar Chaurasiya, Victor Hugo González, Lakhan Bainsla, Akash Kumar, Ahmad Awad, Himanshu Fulara, Johan Åkerman
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Dynamics of an Antiferromagnetic Bloch Line Driven by Spin
Current
Roman Ovcharov, B. A. Ivanov, Johan Åkerman, Roman Khymyn
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Global Biasing Using a Hardware-Based Artificial Zeeman Term in Spinwave Ising
Machines
Victor Hugo González, Artem Litvinenko, Roman Khymyn, Johan Åkerman
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Spin-orbit torques in Co2MnGa magnetic Weyl semimetal thin
films
Lakhan Bainsla, Yuya Sakuraba, Ahmad Awad, Akash Kumar, Nilamani Behera, Roman Khymyn, Saroj P. Dash, Johan Åkerman
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings - 2023 -
Comparison of Magnetic Droplet Nucleation Boundaries in Spin-torque Nano-oscillators with Different Fixed
Layers
Sunjae Chung, Johan Åkerman
New Physics: Sae Mulli - 2023 -
Antiferromagnetic Bloch Line Driven by Spin Current as Room-Temperature Analogue of a Fluxon in a Long Josephson
Junction
Roman Ovcharov, B. A. Ivanov, Johan Åkerman, Roman Khymyn
Physical Review Applied - 2023 -
Ultra-Low Current 10 nm Spin Hall
Nano-Oscillators
Nilamani Behera, Avinash Kumar Chaurasiya, Victor Hugo González, Artem Litvinenko, Lakhan Bainsla, Akash Kumar, Roman Khymyn, Ahmad Awad, Himanshu Fulara, Johan Åkerman
Advanced Materials - 2023 -
Large Non-Volatile Frequency Tuning of Spin Hall Nano-Oscillators using Circular Memristive
Nano-Gates
Maha Khademi, Akash Kumar, Mona Rajabali, Saroj P. Dash, Johan Åkerman
IEEE Electron Device Letters - 2023 -
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. Terschlusen, R. Chimata, D. Phuyal, M. V. Kamalakar, S. Akansel, D. Primetzhofer, Martina Ahlberg, J. Soderstrom, Johan Åkerman, P. Svedlindh, O. Eriksson, O. Karis
Physical Review B - 2023 -
Phase noise analysis of mutually synchronized spin Hall
nano-oscillators
Artem Litvinenko, Akash Kumar, M. Rajabali, Ahmad Awad, Roman Khymyn, Johan Åkerman
APPLIED PHYSICS LETTERS - 2023 -
Large Increase of a Magnetic Damping Due to the Enhancement of Rashba Orbit Coupling at Bi2Se3/Ag
Interface
Y. Kim, S. Kim, S. Chung, Johan Åkerman, S. Lee
Journal of the Korean Magnetics Society - 2023 -
Topology-induced chiral photon emission from a large-scale meron
lattice
X. F. Wu, X. Li, W. Y. Kang, X. C. Zhang, L. Chen, Z. B. Zhong, Y. Zhou, Johan Åkerman, Y. P. Wu, R. Zhang, J. Y. Kang
Nature Electronics - 2023 -
Reversible conversion between skyrmions and
skyrmioniums
S. Yang, Y. L. Zhao, K. Wu, Z. Q. Chu, X. H. Xu, X. G. Li, Johan Åkerman, Y. Zhou
Nature Communications - 2023 -
Fabrication of voltage-gated spin Hall
nano-oscillators
Akash Kumar, Mona Rajabali, Victor Hugo González, M. Zahedinejad, Afshin Houshang, Johan Åkerman
Nanoscale - 2022 -
Phase-Binarized Spin Hall Nano-Oscillator Arrays: Towards Spin Hall Ising
Machines
Afshin Houshang, Mohammad Zahedinejad, Shreyas Muralidhar, Roman Khymyn, Jakub Chęciński, Mona Rajabali, Himanshu Fulara, Ahmad Awad, Mykola Dvornik, Johan Åkerman
Physical Review Applied - 2022 -
Energy-Efficient W100-xTax/ Co-Fe-B/MgO Spin Hall
Nano-Oscillators
Nilamani Behera, H. Fulara, Lakhan Bainsla, Akash Kumar, Mohammad Zahedinejad, Afshin Houshang, Johan Åkerman
Physical Review Applied - 2022 -
Advances in Magnetics Roadmap on Spin-Wave
Computing
A. V. Chumak, P. Kabos, M. Wu, C. Abert, C. Adelmann, A. Adeyeye, Johan Åkerman, F. G. Aliev, A. Anane, Ahmad 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. Hu, H. Huebl, M. Huth, E. Iacocca, M. B. Jungfleisch, G. N. Kakazei, A. Khitun, R. Khymyn, T. Kikkawa, M. Klaui, O. Klein, J. W. Klos, 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. Macedo, 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. 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. Viola Kusminskiy, Q. Wang, M. Weides, M. Weiler, S. Wintz, S. P. Wolski, X. Zhang
IEEE Transactions on Magnetics - 2022 -
Voltage control of frequency, effective damping, and threshold current in nano-constriction-based spin Hall
nano-oscillators
Victor Hugo González, Roman Khymyn, Himanshu Fulara, Ahmad Awad, Johan Åkerman
Applied Physics Letters - 2022 -
Optothermal control of spin Hall
nano-oscillators
Shreyas Muralidhar, Afshin Houshang, Ademir Alemán, Roman Khymyn, Ahmad Awad, Johan Åkerman
Applied Physics Letters - 2022 -
Experimental confirmation of the delayed Ni demagnetization in FeNi
alloy
S. Jana, R. Knut, Shreyas Muralidhar, R. S. Malik, R. Stefanuik, Johan Åkerman, O. Karis, C. Schüßler-Langeheine, N. Pontius
Applied Physics Letters - 2022 -
Ultrathin Ferrimagnetic GdFeCo Films with Low
Damping
Lakhan Bainsla, Akash Kumar, Ahmad Awad, C. Wang, Mohammad Zahedinejad, Nilamani Behera, Himanshu Fulara, Roman Khymyn, Afshin Houshang, J. Weissenrieder, Johan Åkerman
Advanced Functional Materials - 2022 -
Impact of Random Grain Structure on Spin-Hall Nano-Oscillator Modal
Stability
C. C. M. Capriata, S. Jiang, Johan Åkerman, B. G. Malm
IEEE Electron Device Letters - 2022 -
Mutual Synchronization of Constriction-Based Spin Hall Nano-Oscillators in Weak In-Plane Magnetic
Fields
H. Mazraati, Shreyas Muralidhar, Seyyed Etesami, Mohammad Zahedinejad, S. A. H. Banuazizi, S. Chung, Ahmad Awad, Roman Khymyn, Mykola Dvornik, Johan Åkerman
Physical Review Applied - 2022 -
Observation of magnetic droplets in magnetic tunnel
junctions
K. W. Shi, W. L. Cai, Jiang Sheng , D. Q. Zhu, K. H. Cao, Z. X. Guo, J. Q. Wei, A. Du, Z. Li, Y. Huang, J. L. Yin, Johan Åkerman, W. S. Zhao
Science China-Physics Mechanics & Astronomy - 2022 -
Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic
computing
Mohammad Zahedinejad, Himanshu Fulara, Roman Khymyn, Afshin Houshang, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, Johan Åkerman
Nature Materials - 2022 -
Freezing and thawing magnetic droplet
solitons
Martina Ahlberg, Sunjae Chung, Jiang Sheng , Andreas Frisk, M. Khademi, Roman Khymyn, Ahmad Awad, Q. Tuan Le, H. Mazraati, M. Mohseni, M. Weigand, I. Bykova, F. Gross, E. Goering, G. Schutz, J. Grafe, Johan Åkerman
Nature Communications - 2022 -
Inducing Dzyaloshinskii-Moriya interaction in symmetrical multilayers using post
annealing
K. Ahmadi, F. Mahfouzi, L. Jamilpanah, M. Mohseni, T. Bottcher, P. Pirro, N. Kioussis, Johan Åkerman, S. A. S. Ebrahimi, S. M. Mohseni
Scientific Reports - 2022 -
Magnetic force microscopy of an operational spin
nano-oscillator
S. A. H. Banuazizi, Afshin Houshang, Ahmad Awad, J. Mohammadi, Johan Åkerman, L. M. Belova
Microsystems & Nanoengineering - 2022 -
Femtosecond laser comb driven perpendicular standing spin
waves
Ahmad Awad, Shreyas Muralidhar, Ademir F. Alemán Hernández, Roman Khymyn, Dag Hanstorp, Johan Åkerman
Applied Physics Letters - 2022 -
Roadmap of Spin-Orbit
Torques
Q. M. Shao, P. Li, L. Q. Liu, H. Yang, S. Fukami, A. Razavi, H. Wu, K. Wang, F. Freimuth, Y. Mokrousov, M. D. Stiles, S. Emori, A. Hoffmann, Johan Åkerman, K. Roy, J. P. Wang, S. H. Yang, K. Garello, W. Zhang
Ieee Transactions on Magnetics - 2021 -
Enhanced Modulation Bandwidth of a Magnetic Tunnel Junction-Based Spin Torque Nano-Oscillator Under Strong Current
Modulation
R. Sharma, N. Sisodia, Johan Åkerman, P. K. Muduli
Ieee Electron Device Letters - 2021 -
Impact of intragrain spin wave reflections on nanocontact spin torque
oscillators
A. J. Eklund, M. Dvornik, F. Qejvanaj, S. Jiang, Sunjae Chung, Johan Åkerman, B. G. Malm
Physical Review B - 2021 -
Using the photoinduced L-3 resonance shift in Fe and Ni as time reference for ultrafast experiments at low flux soft x-ray
sources
S. Jana, Shreyas Muralidhar, Johan Åkerman, C. Schussler-Langeheine, N. Pontius
Structural Dynamics - 2021 -
Ultrafast Ising Machines using spin torque
nano-oscillators
D. I. Albertsson, Mohammad Zahedinejad, Afshin Houshang, Roman Khymyn, Johan Åkerman, A. Rusu
Applied Physics Letters - 2021 -
Femtosecond laser driven precessing magnetic
gratings
Gaolong Cao, Jiang Sheng , Johan Åkerman, J. Weissenrieder
Nanoscale - 2021 -
Femtosecond Laser Pulse Driven Caustic Spin Wave
Beams
Shreyas Muralidhar, Roman Khymyn, Ahmad Awad, Felipe Ademir Alemán Hérnandez, Dag Hanstorp, Johan Åkerman
Physical Review Letters - 2021 -
Measuring spin wave resonance in Ni100-xFex films: compositional and temperature
dependence
M. Haidar, S. Isber, Johan Åkerman
Journal of Physics D-Applied Physics - 2021 -
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, Johan Åkerman, T. T. Le, Q. N. Pham, H. L. Pham, T. N. A. Nguyen
Journal of Physics D-Applied Physics - 2021 -
Investigation of Magnetic Properties in Co/Ni -NiFe Exchange Spring
Magnet
S. Chung, Johan Åkerman
Journal of the Korean Magnetics Society - 2021 -
Compositional effect on auto-oscillation behavior of Ni 100 -Fe-x(x)/Pt spin Hall
nano-oscillators
M. Haidar, H. Mazraati, Philipp Dürrenfeld, Himanshu Fulara, Mojtaba Ranjbar, Johan Åkerman
Applied Physics Letters - 2021 -
Two-dimensional mutually synchronized spin Hall nano-oscillator arrays for neuromorphic
computing
Mohammad Zahedinejad, Ahmad Awad, Shreyas Muralidhar, Roman Khymyn, Himanshu Fulara, Hamid Mazaraati, Mykola Dvornik, Johan Åkerman
Nature Nanotechnology - 2020 -
Frequency comb enhanced Brillouin
microscopy
Felipe Ademir Alemán Hérnandez, Shreyas Muralidhar, Ahmad Awad, Johan Åkerman, Dag Hanstorp
Optics Express - 2020 -
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. Przewoznik, 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, Johan Åkerman
Scientific Reports - 2020 -
A Magnetic Field-to-Digital Converter Employing a Spin-Torque
Nano-Oscillator
D. I. Albertsson, Johan Åkerman, A. Rusu
Ieee Transactions on Nanotechnology - 2020 -
Tuning Magnetic Droplets in Nanocontact Spin-Torque Oscillators Using Electric
Fields
Cuixiu Zheng, Mykola Dvornik, Chengjie Wang, Dun Xiao, Yaowen Liu, Zongzhi Zhang, Yan Zhou, Hamid Mazraati, Martina Ahlberg, Ahmad Awad, Johan Åkerman
Physical Review Applied - 2020 -
Analysis of the linear relationship between asymmetry and magnetic moment at the M edge of 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, Martina Ahlberg, Johan Åkerman, R. Chimata, M. Battiato, J. Soderstrom, O. Eriksson, O. Karis
Physical Review Research - 2020 -
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, Johan Åkerman, A. Deac, P. Pirro, C. Adelmann, A. Anane, A. V. Chumak, A. Hirohata, S. Mangin, M. C. Onbasli, M. D'Aquino, G. Prenat, G. Finocchio, L. Lopez-Diaz, R. Chantrell, O. Chubykalo-Fesenko, P. Bortolotti
Nature Electronics - 2020 -
Sustained coherent spin wave emission using frequency
combs
Shreyas Muralidhar, Ahmad Awad, Ademir F. Alemán Hernández, Roman Khymyn, Mykola Dvornik, Dag Hanstorp, Johan Åkerman
Physical Review B - 2020 -
Giant voltage-controlled modulation of spin Hall nano-oscillator
damping
Himanshu Fulara, Mohammad Zahedinejad, Roman Khymyn, Mykola Dvornik, S. Fukami, S. Kanai, H. Ohno, Johan Åkerman
Nature Communications - 2020 -
Width dependent auto-oscillating properties of constriction based spin Hall
nano-oscillators
Ahmad Awad, Afshin Houshang, Mohammad Zahedinejad, Roman Khymyn, Johan Åkerman
Applied Physics Letters - 2020 -
Enhanced skyrmion motion via strip domain
wall
X. J. Xing, Johan Åkerman, Y. Zhou
Physical Review B - 2020 -
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. Przewoznik, J. Fedotova, C. Kapusta, O. Kupreeva, S. Lazarouk, K. T. Do, T. H. Nguyen, H. K. Vu, H. L. Pham, D. L. Vu, Johan Åkerman
Journal of Applied Physics - 2020 -
Reduced spin torque nano-oscillator linewidth using He +
irradiation
Jiang Sheng , Roman Khymyn, Sunjae Chung, Q. Tuan Le, Liza Herrera Diez, Afshin Houshang, Mohammad Zahedinejad, Dafiné Ravelosona, Johan Åkerman
Applied Physics Letters - 2020 -
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. A. Nguyen, J. Fedotova, J. Przewoznik, C. Kapusta, O. Kupreeva, S. Lazarouk, K. T. Do, T. H. Nguyen, H. K. Vu, D. L. Vu, Johan Åkerman
Physical Chemistry Chemical Physics - 2020 -
Nonreciprocal spin pumping damping in asymmetric magnetic
trilayers
Y. Pogoryelov, M. Pereiro, S. Jana, A. Kumar, S. Akansel, Mojtaba Ranjbar, D. Thonig, D. Primetzhofer, P. Svedlindh, Johan Åkerman, O. Eriksson, O. Karis, D. A. Arena
Physical Review B - 2020 -
Chiral excitations of magnetic droplet solitons driven by their own
inertia
M. Mohseni, D. R. Rodrigues, M. Saghafi, S. Chung, Martina Ahlberg, H. F. Yazdi, Q. Wang, S. A. H. Banuazizi, P. Pirro, Johan Åkerman, M. Mohseni
Physical Review B - 2020 -
Magnetodynamics in orthogonal nanocontact spin-torque nano-oscillators based on magnetic tunnel
junctions
S. Jiang, Martina Ahlberg, S. Chung, Afshin Houshang, R. Ferreira, P. P. Freitas, Johan Åkerman
Applied Physics Letters - 2019 -
Compact Macrospin-Based Model of Three-Terminal Spin-Hall Nano
Oscillators
D. I. Albertsson, Mohammad Zahedinejad, Johan Åkerman, S. Rodriguez, A. Rusu
Ieee Transactions on Magnetics - 2019 -
Magnetization reversal of antiferromagnetically coupled (Co/Ni) and (Co/Pt)
multilayers
A. Al Subhi, R. Sbiaa, Mojtaba Ranjbar, Johan Åkerman
Journal of Magnetism and Magnetic Materials - 2019 -
Time-resolved imaging of magnetization dynamics in double nanocontact spin torque vortex oscillator
devices
E. Burgos-Parra, P. S. Keatley, S. Sani, Phillip Durrenfeld, Johan Åkerman, R. J. Hicken
Physical Review B - 2019 -
Tuning exchange-dominated spin-waves using lateral current spread in nanocontact spin-torque
nano-oscillators
Masoumeh Fazlali, S. A. H. Banuazizi, Martina Ahlberg, Mykola Dvornik, S. R. Sani, S. M. Mohseni, Johan Åkerman
Journal of Magnetism and Magnetic Materials - 2019 -
Subterahertz ferrimagnetic spin-transfer torque
oscillator
I. Lisenkov, Roman Khymyn, Johan Åkerman, N. X. Sun, B. A. Ivanov
Physical Review B - 2019 -
A single layer spin-orbit torque
nano-oscillator.
Mohammad Haidar, Ahmad Awad, Mykola Dvornik, Roman Khymyn, Afshin Houshang, Johan Åkerman
Nature communications - 2019 -
Spin-orbit torque–driven propagating spin
waves
Himanshu Fulara, Mohammad Zahedinejad, Roman Khymyn, Ahmad Awad, Shreyas Muralidhar, Mykola Dvornik, Johan Åkerman
Science Advances - 2019 -
Enhanced Perpendicular Exchange Bias in Co/Pd Antidot
Arrays
T Nguyen, J. Fedotova, J. Kasiuk, W. B. Wu, J. Przewoznik, C. Kapusta, O. Kupreeva, S. Lazarouk, T. H. T. Trinh, K. T. Do, H. M. Do, D. L. Vu, Johan Åkerman
Journal of Electronic Materials - 2019 -
Impact of the Oersted Field on Droplet Nucleation
Boundaries
S. Jiang, Seyyed Etesami, S. J. Chung, Q. T. Le, Afshin Houshang, Johan Åkerman
Ieee Magnetics Letters - 2018 -
Spatial mapping of torques within a spin Hall
nano-oscillator
T. M. Spicer, P. S. Keatley, T. H. J. Loughran, Mykola Dvornik, Ahmad Awad, Philipp Dürrenfeld, Afshin Houshang, Mojtaba Ranjbar, Johan Åkerman, V. V. Kruglyak, R. J. Hicken
Physical Review B - 2018 -
Time resolved imaging of the non-linear bullet mode within an injection-locked nano-contact spin Hall
nano-oscillator
T. M. Spicer, P. S. Keatley, Mykola Dvornik, T. H. J. Loughran, Ahmad Awad, Philipp Dürrenfeld, Afshin Houshang, Mojtaba Ranjbar, Johan Åkerman, V. V. Kruglyak, R. J. Hicken
Applied Physics Letters - 2018 -
Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic
auto-oscillator
Roman Khymyn, I. Lisenkov, J. Voorheis, O. Sulymenko, O. Prokopenko, V. Tiberkevich, Johan Åkerman, A. Slavin
Scientific Reports - 2018 -
Ultra-fast logic devices using artificial "neurons" based on antiferromagnetic pulse
generators
O. Sulymenko, O. Prokopenko, I. Lisenkov, Johan Åkerman, V. Tyberkevych, A. N. Slavin, Roman Khymyn
Journal of Applied Physics - 2018 -
Tuning the magnetodynamic properties of all-perpendicular spin valves using He+
irradiation
S. Jiang, S. J. Chung, L. H. Diez, Q. Tuan Le, F. Magnusson, D. Ravelosona, Johan Åkerman
Aip Advances - 2018 -
Using Magnetic Droplet Nucleation to Determine the Spin Torque Efficiency and Asymmetry in Co-x(Ni,Fe)(1-x) Thin
Films
S. Jiang, S. Chung, Q. T. Le, H. Mazraati, Afshin Houshang, Johan Åkerman
Physical Review Applied - 2018 -
Auto-oscillating Spin-Wave Modes of Constriction-Based Spin Hall Nano-oscillators in Weak In-Plane
Fields
H. Mazraati, Seyyed Etesami, S. A. H. Banuazizi, Sunjae Chung, Afshin Houshang, Ahmad Awad, Mykola Dvornik, Johan Åkerman
Physical Review Applied - 2018 -
Spin transfer torque driven higher-order propagating spin waves in nano-contact magnetic tunnel
junctions
Afshin Houshang, Roman Khymyn, Himanshu Fulara, Ajay Gangwar, Mohammad Haidar, Seyyed Etesami, R. Ferreira, P. P. Freitas, Mykola Dvornik, Randy K. Dumas, Johan Åkerman
Nature Communications - 2018 -
Co/Ni multilayers with robust post-annealing performance for spintronics device
applications
S. Gupta, R. Sbiaa, M. Al Bahri, A. Ghosh, S. N. Piramanayagam, Mojtaba Ranjbar, Johan Åkerman
Journal of Physics D-Applied Physics - 2018 -
Improving the magnetodynamical properties of NiFe/Pt bilayers through Hf
dusting
H. Mazraati, Mohammad Zahedinejad, Johan Åkerman
Applied Physics Letters - 2018 -
Effect of flattened surface morphology of anodized aluminum oxide templates on the magnetic properties of nanoporous Co/Pt and Co/Pd thin multilayered
films
Thoai N. Anh Nguyen, J. Fedotova, J. Kasiuk, V. Bayev, O. Kupreeva, S. Lazarouk, D. H. Manh, D. L. Vu, Sunjae Chung, Johan Åkerman, V. Altynov, A. Maximenko
Applied Surface Science - 2018 -
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, Sunjae Chung, Philipp Dürrenfeld, Q. Tuan Le, S. M. Mohseni, Afshin Houshang, S. A. Cavill, R. J. Hicken, Johan Åkerman, G. van der Laan, F. Y. Ogrin
Scientific Reports - 2018 -
Microwave probe stations with throw-dimensional control of the magnetic field to study high-frequency dynamic in nanoscale
devices
S. A. H. Banuazizi, Johan Åkerman
Review of Scientific Instruments - 2018 -
Direct Observation of Zhang-Li Torque Expansion of Magnetic Droplet
Solitons
Sunjae Chung, Q. Tuan Le, Martina Ahlberg, Ahmad Awad, Markus Weigand, Iuliia Bykova, Roman Khymyn, Mykola Dvornik, Hamid Mazraati, Afshin Houshang, Sheng Jiang, Thoai N. Anh Nguyen, Eberhard Goering, Gisela Schütz, Joachim Gräfe, Johan Åkerman
Physical Review Letters - 2018 -
Magnetic droplet soliton nucleation in oblique
fields
M. Mohseni, M. Hamdi, H. F. Yazdi, S. A. H. Banuazizi, Sunjae Chung, Sohrab Sani, Johan Åkerman, M. Mohseni
Physical Review B - 2018 -
CMOS compatible W/CoFeB/MgO spin Hall nano-oscillators with wide frequency
tunability
Mohammad Zahedinejad, H. Mazraati, Himanshu Fulara, J. Yue, S. Jiang, Ahmad Awad, Johan Åkerman
Applied Physics Letters - 2018 -
Magnetic graphene/Ni-nano-crystal hybrid for small field magnetoresistive effect synthesized via electrochemical exfoliation/deposition
technique
Z. Sheykhifard, S. M. Mohseni, B. Tork, M. R. Hajiali, L. Jamilpanah, B. Rahmati, F. Haddadi, M. Hamdi, S. M. 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, Sunjae Chung, Johan Åkerman, N. Nikkam, A. Sohrabi, S. E. Roozmeh
Journal of Materials Science-Materials in Electronics - 2018 -
Origin of Magnetization Auto-Oscillations in Constriction-Based Spin Hall
Nano-Oscillators
Mykola Dvornik, Ahmad Awad, Johan Åkerman
Physical Review Applied - 2018 -
Ferromagnetic and Spin-Wave Resonance on Heavy-Metal-Doped Permalloy Films: Temperature
Effects
Y. L. Yin, Martina Ahlberg, Philipp Dürrenfeld, Y. Zhai, Randy K. Dumas, Johan Åkerman
Ieee Magnetics Letters - 2017 -
Antidamping spin-orbit torques in
epitaxial-Py(100)/beta-Ta
D. Tiwari, N. Behera, A. Kumar, Philipp Dürrenfeld, S. Chaudhary, D. K. Pandya, Johan Åkerman, P. K. Muduli
Applied Physics Letters - 2017 -
Controlled skyrmion nucleation in extended magnetic layers using a nanocontact
geometry
Philipp Dürrenfeld, Y. B. Xu, Johan Åkerman, Y. Zhou
Physical Review B - 2017 -
Time-domain stability of parametric synchronization in a spin-torque nano-oscillator based on a magnetic tunnel
junction
R. Sharma, N. Sisodia, Philipp Dürrenfeld, Johan Åkerman, P. K. Muduli
Physical Review B - 2017 -
Ni thickness influence on magnetic properties (Co/Ni/Co/Pt) multilayers with perpendicular magnetic
anisotropy
R. Sbiaa, I. A. Al-Omari, M. Al Bahri, P. R. Kharel, Mojtaba Ranjbar, Johan Åkerman, D. J. Sellmyer
Journal of Magnetism and Magnetic Materials - 2017 -
Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Orbit
Torque
X. J. Xing, P. W. T. Pong, Johan Åkerman, Y. Zhou
Physical Review Applied - 2017 -
Spin transfer torque ferromagnetic resonance induced spin pumping in the Fe/Pd bilayer
system
A. Kumar, S. Akansel, H. Stopfel, Masoumeh Fazlali, Johan Åkerman, R. Brucas, P. Svedlindh
Physical Review B - 2017 -
Order of magnitude improvement of nano-contact spin torque nano-oscillator
performance
S. A. H. Banuazizi, S. R. Sani, A. Eklund, M. M. Naiini, S. M. Mohseni, Sunjae Chung, Philipp Dürrenfeld, B. G. Malm, Johan Åkerman
Nanoscale - 2017 -
Phase-locking of multiple magnetic droplets by a microwave magnetic
field
C. J. Wang, D. Xiao, Y. Zhou, Johan Åkerman, Y. W. Liu
Aip Advances - 2017 -
Parametric autoexcitation of magnetic droplet soliton perimeter
modes
D. Xiao, V. Tiberkevich, Y. H. Liu, Y. W. Liu, S. M. Mohseni, Sunjae Chung, Martina Ahlberg, A. N. Slavin, Johan Åkerman, Yan Zhou
Physical Review B. Condensed Matter and Materials Physics - 2017 -
Long-range mutual synchronization of spin Hall
nano-oscillators
Ahmad Awad, Philipp Dürrenfeld, Afshin Houshang, Mykola Dvornik, Ezio Iacocca, Randy K. Dumas, Johan Åkerman
Nature Physics - 2017 -
Propagating spin waves in nanocontact spin torque
oscillators
Randy K. Dumas, Afshin Houshang, Johan Åkerman
Spin Wave Confinement Propagating Waves, Second Edition - 2017 -
A high-speed single sideband generator using a magnetic tunnel junction spin torque
nano-oscillator
R. Sharma, N. Sisodia, E. Iacocca, Ahmad Awad, Johan Åkerman, P. K. Muduli
Scientific Reports - 2017 -
Current Modulation of Nanoconstriction Spin-Hall
Nano-Oscillators
Mohammad Zahedinejad, Ahmad Awad, Philipp Dürrenfeld, Afshin Houshang, Yuli Yin, Pranaba Muduli Kishor, Johan Åkerman
IEEE Magnetics Letters - 2017 -
Interfacial Dzyaloshinskii-Moriya Interaction in Pt/CoFeB Films: Effect of the Heavy-Metal
Thickness
S. Tacchi, R. E. Troncoso, Martina Ahlberg, G. Gubbiotti, M. Madami, Johan Åkerman, P. Landeros
Physical Review Letters - 2017 -
Imaging magnetisation dynamics in nano-contact spin-torque vortex oscillators exhibiting gyrotropic mode
splitting
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, Philipp Dürrenfeld, Johan Åkerman, R. J. Hicken
Journal of Physics D-Applied Physics - 2017 -
Anisotropy constant and exchange coupling strength of perpendicularly magnetized CoFeB/Pd multilayers and exchange
springs
A. F. Franco, C. Gonzalez-Fuentes, Johan Åkerman, C. Garcia
Physical Review B - 2017 -
A 20 nm spin Hall
nano-oscillator
Philipp Dürrenfeld, Ahmad Awad, Afshin Houshang, Randy K. Dumas, Johan Åkerman
Nanoscale - 2017 -
Controlling Gilbert damping in a YIG film using nonlocal spin
currents
Mohammad Haidar, Philipp Dürrenfeld, Mojtaba Ranjbar, Michael Balinsky, Masoumeh Fazlali, Mykola Dvornik, Randy K. Dumas, Johan Åkerman
Physical Review B - Condensed Matter and Materials Physics - 2016 -
Spin-wave-beam driven synchronization of nanocontact spin-torque
oscillators
Afshin Houshang, Ezio Iacocca, Philipp Dürrenfeld, Sohrab Sani, Johan Åkerman, Randy K. Dumas
Nature Nanotechnology - 2016 -
Low operational current spin Hall nano-oscillators based on NiFe/W
bilayers
H. Mazraati, Sunjae Chung, Afshin Houshang, Mykola Dvornik, L. Piazza, F. Qejvanaj, S. Jiang, T. Q. Le, J. Weissenrieder, Johan Åkerman
Applied Physics Letters - 2016 -
Enhancement of spin-torque diode sensitivity in a magnetic tunnel junction by parametric
synchronization
Dhananjay Tiwari, Naveen Sisodia, Raghav Sharma, Philipp Dürrenfeld, Johan Åkerman, Pranaba Muduli Kishor
Applied Physics Letters - 2016 -
Direct observation of magnetization dynamics generated by nanocontact spin-torque vortex
oscillators
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, Philipp Dürrenfeld, T. H. J. Loughran, Johan Åkerman, R. J. Hicken
Physical Review B - 2016 -
Holographic imaging of magnetization in a single layer nano-contact spin transfer
oscillator
Erick Omar Burgos Parra, Nick Bukin, Guillaume Beutier, Sohrab Sani, Horia Popescu, Stuart Cavill, Johan Åkerman, Nicolas Jaouen, Paul Keatley, Robert Hicken, Gerrit van der Laan, Feodor Ogrin
IEEE transactions on magnetics - 2016 -
Magnetic droplet nucleation boundary in orthogonal spin-torque
nano-oscillators
Sunjae Chung, Anders Eklund, Ezio Iacocca, Seyed Majid Mohseni, Sohrab Sani, Lake Bookman, Mark Hoefer, Randy K. Dumas, Johan Åkerman
Nature Communications - 2016 -
Monte Carlo Modeling of Mixed-Anisotropy [Co/Ni]2/NiFe
Multilayers
Roberto A. Escobar, Larysa Tryputen, Sebastian Castillo-Sepulveda, Dora Altbir, Sunjae Chung, T. N. Anh Nguyen, M. Mohseni, Johan Åkerman, Caroline A. Ross
IEEE Magnetics Letters - 2016 -
Merging droplets in double nanocontact spin torque
oscillators
D. Xiao, Y. W. Liu, Y. Zhou, S. M. Mohseni, Sunjae Chung, Johan Åkerman
Physical Review B - 2016 -
Low-current, narrow-linewidth microwave signal generation in NiMnSb based single-layer nanocontact spin-torque
oscillators
Philipp Dürrenfeld, F. Gerhard, Mojtaba Ranjbar, S. R. Sani, Sunjae Chung, C. Gould, L. W. Molenkamp, Johan Åkerman
Applied Physics Letters - 2016 -
Spin-Torque and Spin-Hall
Nano-Oscillators
Tingsu Chen, Randy K. Dumas, A. Eklund, Pranaba Muduli Kishor, Afshin Houshang, Ahmad Awad, Philipp Dürrenfeld, B.G. Malm, A. Rusu, Johan Åkerman
Proceedings of the IEEE - 2016 -
Modulation of the spectral characteristics of a nano-contact spin-torque oscillator via spin waves in an adjacent YIG
film
Michael Balinsky, Mohammad Haidar, Mojtaba Ranjbar, Philipp Dürrenfeld, Afshin Houshang, Anderi Slavin, Johan Åkerman
IEEE Magnetics Letters - 2016 -
Homodyne-detected ferromagnetic resonance of in-plane magnetized nanocontacts: Composite spin-wave resonances and their excitation
mechanism
Masoumeh Fazlali, Mykola Dvornik, Ezio Iacocca, Philipp Dürrenfeld, Mohammad Haidar, Johan Åkerman, Randy K. Dumas
Physical Review B. Condensed Matter and Materials Physics - 2016 -
Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic
anisotropy
R. Sbiaa, J. M. Shaw, H. T. Nembach, M. Al Bahri, M. Ranjbar, Johan Åkerman, S. N. Piramanayagam
Journal of Physics D-Applied Physics - 2016 -
Magnetostatically driven domain replication in Ni/Co based perpendicular
pseudo-spin-valves
S. M. Mohseni, M. Hamdi, S. Chung, S. R. Sani, Johan Åkerman
Journal of Physics D-Applied Physics - 2016 -
Free- and reference-layer magnetization modes versus in-plane magnetic field in a magnetic tunnel junction with perpendicular magnetic easy
axis
H. Mazraati, T. Q. Le, Ahmad Awad, Sunjae Chung, E. Hirayama, S. Ikeda, F. Matsukura, H. Ohno, Johan Åkerman
Physical Review B - 2016 -
All-optical study of tunable ultrafast spin dynamics in Co/Pd /NiFe systems: the role of spin-twist structure on Gilbert
damping
C. Banerjee, S. Pal, Martina Ahlberg, T. N. A. Nguyen, Johan Åkerman, A. Barman
Rsc Advances - 2016 -
Superharmonic injection locking of nanocontact spin-torque vortex
oscillators
P. S. Keatley, S. R. Sani, G. Hrkac, S. M. Mohseni, Philipp Dürrenfeld, Johan Åkerman, R. J. Hicken
Physical Review B - 2016 -
Variable variance Preisach model for multilayers with perpendicular magnetic
anisotropy
A. F. Franco, C. Gonzalez-Fuentes, R. Morales, C. A. Ross, Randy K. Dumas, Johan Åkerman, C. Garcia
Physical Review B - 2016 -
Propagating spin waves excited by spin-transfer torque: A combined electrical and optical
study
M. Madami, Ezio Iacocca, S. Sani, G. Gubbiotti, S. Tacchi, Randy K. Dumas, Johan Åkerman, G. Carlotti
Physical Review B. Condensed Matter and Materials Physics - 2015 -
Exponentially decaying magnetic coupling in sputtered thin film FeNi/Cu/FeCo
trilayers
Y. J. Wei, S. Akansel, T. Thersleff, I. Harward, R. Brucas, Mojtaba Ranjbar, S. Jana, P. Lansaker, Yevgen Pogoryelov, Randy K. Dumas, K. Leifer, O. Karis, Johan Åkerman, Z. Celinski, P. Svedlindh
Applied Physics Letters - 2015 -
Spin Pumping and the Inverse Spin-Hall Effect via Magnetostatic Surface Spin-Wave Modes in Yttrium-Iron Garnet/Platinum
Bilayers
Michael Balinsky, Mojtaba Ranjbar, Mohammad Haidar, Philipp Dürrenfeld, Serigy Khartsev, Anderi Slavin, Johan Åkerman, Randy K. Dumas
IEEE Magnetics Letters - 2015 -
Thickness-and temperature-dependent magnetodynamic properties of yttrium iron garnet thin
films
Mohammad Haidar, Mojtaba Ranjbar, Michael Balinsky, Randy K. Dumas, S. Khartsev, Johan Åkerman
Journal of Applied Physics - 2015 -
Tunable permalloy-based films for magnonic
devices
Yuli Yin, Fan Pan, Martina Ahlberg, Mojtaba Ranjbar, Philipp Dürrenfeld, Afshin Houshang, Mohammad Haidar, Lars Bergqvist, Ya Zhai, Randy K. Dumas, Anna Delin, Johan Åkerman
Physical Review B - 2015 -
Spin Pumping and the Inverse Spin-Hall Effect via Magnetostatic Surface Spin-Wave Modes in Yttrium-Iron Garnet/Platinum
Bilayers
Michael Balinsky, Mojtaba Ranjbar, Mohammad Haidar, Philipp Dürrenfeld, S. Khartsev, A. Slavin, Johan Åkerman, Randy K. Dumas
Ieee Magnetics Letters - 2015 -
Dynamically stabilized magnetic
skyrmions
Y. Zhou, Ezio Iacocca, Ahmad Awad, Randy K. Dumas, F. C. Zhang, H. B. Braun, Johan Åkerman
Nature Communications - 2015 -
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, Sunjae Chung, F. Magnusson, Johan Åkerman
Ieee Transactions on Magnetics - 2015 -
Tunable damping, saturation magnetization, and exchange stiffness of half-Heusler NiMnSb thin
films
Philipp Dürrenfeld, F. Gerhard, J. Chico, Randy K. Dumas, Mojtaba Ranjbar, A. Bergman, L. Bergqvist, A. Delin, C. Gould, L. W. Molenkamp, Johan Åkerman
Physical Review B - 2015 -
Modulation Rate Study in a Spin-Torque Oscillator-Based Wireless Communication
System
R. Sharma, Philipp Dürrenfeld, Mojtaba Ranjbar, Randy K. Dumas, Johan Åkerman, Pranaba Muduli Kishor
Ieee Transactions on Magnetics - 2015 -
Graphene spintronics: the European Flagship
perspective
Stefan Roche, Johan Åkerman, Bernd Beschoten, Jean-Christophe Charlier, Mairbek Chshiev, Saroj Prasad Dash, Bruno Dlubak, Jaroslav Fabian, Albert Fert, Marcos Guimarães, Francisco Guinea, Irina Grigorieva, Christian Schönenberger, Pierre Seneor, Christoph Stampfer, Sergio O. Valenzuela, Xavier Waintal, Bart van Wees
2D Materials - 2015 -
Magnetic droplet solitons in orthogonal spin
valves
Sunjae Chung, S. Majid Mohseni, A. Eklund, Philipp Dürrenfeld, Mojtaba Ranjbar, S. R. Sani, T. N. Anh Nguyen, Randy K. Dumas, Johan Åkerman
Fizika Nizkikh Temperatur - 2015 -
Measuring acoustic mode resonance alone as a sensitive technique to extract antiferromagnetic coupling
strength
Y. J. Wei, P. Svedlindh, M. Kostylev, Mojtaba Ranjbar, Randy K. Dumas, Johan Åkerman
Physical Review B - 2015 -
Temperature effect on exchange coupling and magnetization reversal in antiferromagnetically coupled (Co/Pd)
multilayers
R. Sbiaa, I. A. Al-Omari, P. R. Kharel, Mojtaba Ranjbar, D. J. Sellmyer, Johan Åkerman, S. N. Piramanayagam
Journal of Applied Physics - 2015 -
Integration of GMR-based spin torque oscillators and CMOS
circuitry
T. Chen, A. Eklund, S. Sani, S. Rodriguez, B. G. Malm, Johan Åkerman, A. Rusu
Solid-State Electronics - 2015 -
Au/NiFe Magnetoplasmonics: Large Enhancement of Magneto-Optical Kerr Effect for Magnetic Field Sensors and
Memories
M. Moradi, S. M. Mohseni, S. Mahmoodi, D. Rezvani, N. Ansari, S. Chung, Johan Åkerman
Electronic Materials Letters - 2015 -
Active magnetoplasmonic
ruler
Irina Zubritskaya, Kristof Lodewijks, Nicolò Maccaferri, Addis Mekonnen, Randy K. Dumas, Johan Åkerman, Paolo Vavassori, Alexandre Dmitriev
Nano letters - 2015 -
Mode-coupling mechanisms in nanocontact spin-torque
oscillators
Ezio Iacocca, Philipp Dürrenfeld, O. Heinonen, Johan Åkerman, Randy K. Dumas
Physical Review B - 2015 -
Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector
magnetometry
C. Morrison, J. J. Miles, T. N. A. Nguyen, Yeyu Fang, Randy K. Dumas, Johan Åkerman, T. Thomson
Journal of Applied Physics - 2015 -
Domain structures and magnetization reversal in Co/Pd and CoFeB/Pd
multilayers
R. Sbiaa, Mojtaba Ranjbar, Johan Åkerman
Journal of Applied Physics - 2015 -
Ultrasensitive and label-free molecular-level detection enabled by light phase control in magnetoplasmonic
nanoantennas
N. Maccaferri, K. E. Gregorczyk, Tvag de Oliveira, M. Kataja, S. van Dijken, Zhaleh Pirzadeh, Alexandre Dmitriev, Johan Åkerman, M. Knez, P. Vavassori
Nature Communications - 2015 -
Role of boron diffusion in CoFeB/MgO magnetic tunnel
junctions
S. Mukherjee, R. Knut, S. M. Mohseni, T. N. A. Nguyen, S. Chung, Q. T. Le, Johan Åkerman, J. Persson, A. Sahoo, A. Hazarika, B. Pal, S. Thiess, M. Gorgoi, P. S. A. Kumar, W. Drube, O. Karis, D. D. Sarma
Physical Review B - 2015 -
Magnetic structure and anisotropy of Co/Pd (5)/NiFe
multilayers
L. Tryputen, F. Guo, F. Liu, T. N. A. Nguyen, M. S. Mohseni, Sunjae Chung, Yeyu Fang, Johan Åkerman, R. D. McMichael, C. A. Ross
Physical Review B - 2015 -
Comprehensive and macrospin-based magnetic tunnel junction spin torque oscillator model-part I: Analytical model of the MTJ
STO
T. Chen, A. Eklund, Ezio Iacocca, S. Rodriguez, B. G. Malm, Johan Åkerman, A. Rusu
IEEE Transactions on Electron Devices - 2015 -
Spin Hall effect-controlled magnetization dynamics in
NiMnSb
Philipp Dürrenfeld, F. Gerhard, Mojtaba Ranjbar, C. Gould, L. W. Molenkamp, Johan Åkerman
Journal of Applied Physics - 2015 -
Magnetic coupling in asymmetric FeCoV/Ru/FeNi
trilayers
Y. J. Wei, S. Jana, R. Brucas, Yevgen Pogoryelov, Mojtaba Ranjbar, Randy K. Dumas, P. Warnicke, Johan Åkerman, D. A. Arena, O. Karis, P. Svedlindh
Journal of Applied Physics - 2014 -
Recent Advances in Nanocontact Spin-Torque
Oscillators
Randy K. Dumas, S. R. Sani, S. M. Mohseni, Ezio Iacocca, Yevgen Pogoryelov, Pranaba Muduli Kishor, S. Chung, Philipp Dürrenfeld, Johan Åkerman
Ieee Transactions on Magnetics - 2014 -
CoFeB-Based Spin Hall
Nano-Oscillators
Mojtaba Ranjbar, Philipp Dürrenfeld, Mohammad Haidar, Ezio Iacocca, Michael Balinsky, T.Q. Le, Masoumeh Fazlali, Afshin Houshang, Ahmad Awad, Randy K. Dumas, Johan Åkerman
Ieee Magnetics Letters - 2014 -
Effect of nanoconfinement on the formation, structural transition and magnetic behavior of mesoporous copper
ferrite
Najmeh Najmoddin, Ali Beitollahi, Mamoun Muhammed, Narges Ansari, Eamonn Devlin, Seyed Majid Mohseni, Hamidreza Rezaie, Dimitris Niarchos, Johan Åkerman, Muhammet S. Toprak
Journal of Alloys and Compounds - 2014 -
Effect of Excitation Fatigue on the Synchronization of Multiple Nanocontact Spin-Torque
Oscillators
Afshin Houshang, Masoumeh Fazlali, S. R. Sani, Philipp Dürrenfeld, Ezio Iacocca, Johan Åkerman, Randy K. Dumas
Ieee Magnetics Letters - 2014 -
Magnetic properties of crystalline mesoporous Zn-substituted copper ferrite synthesized under nanoconfinement in silica
matrix
Najmeh Najmoddin, Ali Beitollahi, Eamonn Devlin, Hüseyin Kavas, Majid Mohseni, Johan Åkerman, Dimitris Niarchos, Hamidreza Rezaie, Mamoun Muhammed, Muhammet Toprak
Microporous and Mesoporous Materials - 2014 -
Spintronics: Channeling spin
waves
Randy K. Dumas, Johan Åkerman
Nature Nanotechnology - 2014 -
Thick Double-Biased IrMn/NiFe/IrMn Planar Hall Effect Bridge
Sensors
Fatjon Qejvanaj, Anders Persson, Majid Mohseni, Vahid Fallahi, Sohrab Sani, Sunjae Chung, Tuan Le, Fredrik Magnusson, Johan Åkerman
IEEE Transactions on Magnetics - 2014 -
XRD cation distribution and magnetic properties of mesoporous Zn-substituted
CuFe2O4
Najmeh Najmoddin, Ali Beitollahi, Hüseyin Kavas, Majid Mohseni, Hamidreza Rezaie, Johan Åkerman, Muhammet Toprak
Ceramics International - 2014 -
Magnetic droplet solitons in orthogonal nano-contact spin torque
oscillators
S. M. Mohseni, S. R. Sani, Randy K. Dumas, J. Persson, T. N. Anh Nguyen, Sunjae Chung, Yevgen Pogoryelov, Pranaba Muduli Kishor, Ezio Iacocca, A. Eklund, Johan Åkerman
Physica. B, Condensed matter - 2014 -
Hysteretic Synchronization in Spin-Torque Nanocontact Oscillators: A Micromagnetic
Study
V. Puliafito, Yevgen Pogoryelov, B. Azzerboni, Johan Åkerman, G. Finocchio
IEEE transactions on nanotechnology - 2014 -
Modulation-mediated unlocking of a parametrically phase-locked spin torque
oscillator
Philipp Dürrenfeld, Ezio Iacocca, Johan Åkerman, Pranaba Muduli Kishor
Applied Physics Letters - 2014 -
Spin reorientation via antiferromagnetic
coupling
Mojtaba Ranjbar, R. Sbiaa, Randy K. Dumas, Johan Åkerman, S. N. Piramanayagam
Journal of Applied Physics - 2014 -
Co/Pd -CoFeB exchange spring magnets 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, Randy K. Dumas, Johan Åkerman
Journal of Physics D-Applied Physics - 2014 -
Magnetoplasmonic Design Rules for Active
Magneto-Optics
Kristof Lodewijks, N. Maccaferri, T. Pakizeh, Randy K. Dumas, Irina Zubritskaya, Johan Åkerman, P. Vavassori, Alexandre Dmitriev
Nano letters - 2014 -
Depth-Dependent Magnetization Profiles of Hybrid Exchange
Springs
T. N. A. Nguyen, R. Knut, V. Fallahi, Sunjae Chung, Q. T. Le, S. M. Mohseni, O. Karis, S. Peredkov, Randy K. Dumas, C. W. Miller, Johan Åkerman
Physical Review Applied - 2014 -
Investigation of the Tunability of the Spin Configuration Inside Exchange Coupled Springs of Hard/Soft
Magnets
T. N. A. Nguyen, V. Fallahi, Q. T. Le, S. Chung, S. M. Mohseni, Randy K. Dumas, C. W. Miller, Johan Åkerman
Ieee Transactions on Magnetics - 2014 -
Mode-hopping mechanism generating colored noise in a magnetic tunnel junction based spin torque
oscillator
R. Sharma, Philipp Dürrenfeld, Ezio Iacocca, O. G. Heinonen, Johan Åkerman, Pranaba Muduli Kishor
Applied Physics Letters - 2014 -
Accessing different spin-disordered states using first-order reversal
curves
Randy K. Dumas, P. K. Greene, D. A. Gilbert, L. Ye, C. L. Zha, Johan Åkerman, K. Liu
Physical Review B - 2014 -
The 2014 Magnetism
Roadmap
R. L. Stamps, S. Breitkreutz, Johan Åkerman, A. V. Chumak, Y. Otani, G. E. W. Bauer, J. U. Thiele, M. Bowen, S. A. Majetich, M. Klaui, I. L. Prejbeanu, B. Dieny, N. M. Dempsey, B. Hillebrands, V. P. Nada
Journal of Physics D-Applied Physics - 2014 -
Effects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic
nanodisks
N. Maccaferri, M. Kataja, V. Bonanni, S. Bonetti, Zhaleh Pirzadeh, Alexandre Dmitriev, S. van Dijken, Johan Åkerman, P. Vavassori
Physica Status Solidi a-Applications and Materials Science - 2014 -
A highly tunable microwave oscillator based on MTJ STO
technology
T. Chen, Philipp Dürrenfeld, S. Rodriguez, Johan Åkerman, A. Rusu
Microwave and Optical Technology Letters - 2014 -
Spin transfer torque generated magnetic droplet solitons
(invited)
Sunjae Chung, S. M. Mohseni, S. R. Sani, Ezio Iacocca, Randy K. Dumas, T. N. A. Nguyen, Yevgen Pogoryelov, Pranaba Muduli Kishor, A. Eklund, M. Hoefer, Johan Åkerman
Journal of Applied Physics - 2014 -
Dependence of the colored frequency noise in spin torque oscillators on current and magnetic
field
A. Eklund, S. Bonetti, S. R. Sani, S. M. Mohseni, J. Persson, S. J. Chung, S. A. H. Banuazizi, Ezio Iacocca, M. Ostling, Johan Åkerman, B. G. Malm
Applied Physics Letters - 2014 -
Confined Dissipative Droplet Solitons in Spin-Valve Nanowires with Perpendicular Magnetic
Anisotropy
Ezio Iacocca, Randy K. Dumas, L. Bookman, M. Mohseni, Sunjae Chung, M. A. Hoefer, Johan Åkerman
Physical Review Letters - 2014 -
Parametric excitation in a magnetic tunnel junction-based spin torque
oscillator
Philipp Dürrenfeld, Ezio Iacocca, Johan Åkerman, Pranaba Muduli Kishor
Applied Physics Letters - 2014 -
Generation linewidth of mode-hopping spin torque
oscillators
Ezio Iacocca, O. Heinonen, Pranaba Muduli Kishor, Johan Åkerman
Physical Review B - 2014 -
Linear Phase Tuning of Spin Torque Oscillators Using In-Plane Microwave
Fields
T. Zeng, Y. Zhou, Johan Åkerman, P. T. Lai, P. W. T. Pong
Ieee Transactions on Magnetics - 2014 -
Oxidation states and quality of upper interfaces in magnetic tunnel junctions: oxygen effect on crystallization of
interfaces
S. Kamali, C. L. Zha, Y. Yoda, Johan Åkerman
Journal of Physics-Condensed Matter - 2014 -
Microwave Signal Generation in Single-Layer Nano-Contact Spin Torque
Oscillators
S. R. Sani, Philipp Dürrenfeld, S.M. Mohseni, Sunjae Chung, Johan Åkerman
Ieee Transactions on Magnetics - 2013 -
A Nonvolatile Spintronic Memory Element with a Continuum of Resistance
States
Yeyu Fang, Randy K. Dumas, T. N. Anh Nguyen, Majid Mohseni, Sunjae Chung, Casey W. Miller, Johan Åkerman
Advanced Functional Materials - 2013 -
Triple mode-jumping in a spin torque
oscillator
Anders J. Eklund, Sohrab R. Sani, S. Majid Mohseni, Johan Persson, B. Gunnar Malm, Johan Åkerman
2013 22nd International Conference on Noise and Fluctuations, 24-28 June 2013, Montpellier, France - 2013 -
Tuning the Magneto-Optical Response of Nanosize Ferromagnetic Ni Disks Using the Phase of Localized
Plasmons
N. Maccaferri, A. Berger, S. Bonetti, V. Bonanni, M. Kataja, Q. H. Qin, S. van Dijken, Zhaleh Pirzadeh, Alexandre Dmitriev, J. Nogues, Johan Åkerman, P. Vavassori
Physical Review Letters - 2013 -
Polarizability and magnetoplasmonic properties of magnetic general
nanoellipsoids
N. Maccaferri, J. B. Gonzalez-Diaz, S. Bonetti, A. Berger, M. Kataja, S. van Dijken, J. Nogues, Valentina Bonanni, Zhaleh Pirzadeh, Alexandre Dmitriev, Johan Åkerman, P. Vavassori
Optics Express - 2013 -
Mutually synchronized bottom-up multi-nanocontact spin-torque
oscillators
S.R. Sani, J.M. Persson, S.M. Mohseni, Yevgen Pogoryelov, Pranaba Muduli Kishor, A.J. Eklund, G. Malm, Mikael Käll, Alexandre Dmitriev, Johan Åkerman
Nature Communications - 2013 -
Non-stationary excitation of two localized spin-wave modes in a nano-contact spin torque
oscillator
G. Consolo, G. Finocchio, G. Siracusano, S. Bonetti, A. Eklund, Johan Åkerman, B. Azzerboni
Journal of Applied Physics - 2013 -
Nano-Contact Spin-Torque Oscillators as Magnonic Building
Blocks
Stefano Bonetti, Johan Åkerman
Topics in Applied Physics vol 125, Magnonics-From Fundamentals to Applications - 2013 -
Decoherence, Mode Hopping, and Mode Coupling in Spin Torque
Oscillators
O. G. Heinonen, Pranaba Muduli Kishor, Ezio Iacocca, Johan Åkerman
Ieee Transactions on Magnetics - 2013 -
Spin-Wave-Mode Coexistence on the Nanoscale: A Consequence of the Oersted-Field-Induced Asymmetric Energy
Landscape
Randy K. Dumas, Ezio Iacocca, S. Bonetti, S. R. Sani, S. M. Mohseni, A. Eklund, J. Persson, O. Heinonen, Johan Åkerman
Physical Review Letters - 2013 -
Resonant excitation of injection-locked spin-torque
oscillators
Ezio Iacocca, Johan Åkerman
Physical Review B - 2013 -
Reversal mode instability and magnetoresistance in perpendicular (Co/Pd)/Cu/(Co/Ni)
pseudo-spin-valves
J. E. Davies, D. A. Gilbert, S. M. Mohseni, Randy K. Dumas, Johan Åkerman, K. Liu
Applied Physics Letters - 2013 -
Spin wave excitations in exchange-coupled Co/Pd -NiFe films with tunable tilting of the
magnetization
S. Tacchi, T. N. A. Nguyen, G. Carlotti, G. Gubbiotti, M. Madami, Randy K. Dumas, J. W. Lau, Johan Åkerman, A. Rettori, M. G. Pini
Physical Review B - 2013 -
Spin Torque-Generated Magnetic Droplet
Solitons
S. M. Mohseni, S. R. Sani, J. Persson, T. N. A. Nguyen, Sunjae Chung, Yevgen Pogoryelov, Pranaba Muduli Kishor, Ezio Iacocca, A. Eklund, Randy K. Dumas, S. Bonetti, A. Deac, M. A. Hoefer, Johan Åkerman
Science - 2013 -
Oxidation states and the quality of lower interfaces in magnetic tunnel junctions: oxygen effect on crystallization of
interfaces
S. Kamali, C. L. Zha, Y. Yoda, Johan Åkerman
Journal of Physics-Condensed Matter - 2013 -
Tunable spin configuration in Co/Ni -NiFe spring
magnets
Sunjae Chung, S. M. Mohseni, V. Fallahi, T. N. A. Nguyen, N. Benatmane, Randy K. Dumas, Johan Åkerman
Journal of Physics D-Applied Physics - 2013 -
Power and linewidth of propagating and localized modes in nanocontact spin-torque
oscillators
Stefano Bonetti, Vito Puliafito, Giancarlo Consolo, Vasyl Tiberkevich, Andrei Slavin, Johan Åkerman
Physical Review B. Condensed Matter and Materials Physics - 2012 -
Temperature dependence of linewidth in nanocontact based spin torque oscillators: Effect of multiple oscillatory
modes
Pranaba Muduli Kishor, O. G. Heinonen, Johan Åkerman
Physical Review B - 2012 -
Combined Wide-Narrow Double Modulation of Spin-Torque Oscillators for Improved Linewidth During
Communication
Yevgen Pogoryelov, Pranaba Muduli Kishor, Johan Åkerman
Ieee Transactions on Magnetics - 2012 -
Spin-Torque Oscillator in an Electromagnet
Package
Johan Persson, S. R. Sani, S. Bonetti, F. Magnusson, Y. Pogorylov, S. M. Mohseni, S. Gunnarsson, M. Norling, C. Stoij, Johan Åkerman
IEEE Transactions on Magnetics - 2012 -
Macrospin and micromagnetic studies of tilted polarizer spin-torque
nano-oscillators
Y. Zhou, H. Zhang, Y. W. Liu, Johan Åkerman
Journal of Applied Physics - 2012 -
Co/Pd (4)-Co-Pd-NiFe spring magnets with highly tunable and uniform magnetization tilt
angles
T. N. A. Nguyen, N. Benatmane, V. Fallahi, Yeyu Fang, S. M. Mohseni, Randy K. Dumas, Johan Åkerman
Journal of Magnetism and Magnetic Materials - 2012 -
Multiple synchronization attractors of serially connected spin-torque
nanooscillators
D. Li, Y. Zhou, B. B. Hu, Johan Åkerman, C. S. Zhou
Physical Review B - 2012 -
Analytical investigation of modulated spin-torque oscillators in the framework of coupled differential equations with variable
coefficients
Ezio Iacocca, Johan Åkerman
Physical Review B - 2012 -
Utility of reactively sputtered CuNx films in spintronics
devices
Yeyu Fang, Johan Persson, C. Zha, J. Willman, C. W. Miller, Johan Åkerman
Journal of Applied Physics - 2012 -
Decoherence and Mode Hopping in a Magnetic Tunnel Junction Based Spin Torque
Oscillator
Pranaba Muduli Kishor, O. G. Heinonen, Johan Åkerman
Physical Review Letters - 2012 -
Nanostructured MnGa Films on Si/SiO2 with 20.5 kOe Room Temperature
Coercivity
Chaolin Zha, Randy K. Dumas, J. W. Lau, Seyed Majid Mohseni, Sohrab Redjai Sani, I. V. Golosovsky, Å. F. Monsen, Josoe Nogués, Johan Åkerman
Journal of Applied Physics - 2011 -
Spin Torque Oscillators and RF Currents—Modulation, Locking, and
Ringing
Pranaba Muduli Kishor, Yevgen Pogoryelov, Yan Zhou, Fred Mancoff, Johan Åkerman
Integrated Ferroelectrics - 2011 -
Modulation of Individual and Mutually Synchronized Nanocontact-Based Spin Torque
Oscillators
Pranaba Muduli Kishor, Yevgen Pogoryelov, Fred Mancoff, Johan Åkerman
IEEE transactions on magnetics - 2011 -
Spin-torque oscillator linewidth narrowing under current
modulation
Yevgen Pogoryelov, Pranaba Muduli Kishor, Stefano Bonetti, Fred Mancoff, Johan Åkerman
Applied Physics Letters - 2011 -
Current induced vortices in multi-nanocontact spin-torque
devices
Sohrab Redjai Sani, Johan Persson, Seyed Majid Mohseni, Vahid Fallahi, Johan Åkerman
Journal of Applied Physics - 2011 -
An in-situ anneal study of graded anisotropy FePtCu thin
films
Yeyu Fang, Randy K. Dumas, Chaolin Zha, Johan Åkerman
IEEE Magnetics Letters - 2011 -
[Co/Pd]-NiFe exchange springs with tunable magnetization tilt
angle
T. N. Anh Nguyen, Yeyu Fang, Vahid Fallahi, Nadjib Benatmane, Seyed Majid Mohseni, Randy K. Dumas, Johan Åkerman
Applied Physics Letters - 2011 -
Frequency modulation of spin torque oscillator
pairs
Yevgen Pogoryelov, Pranaba Muduli Kishor, Stefano Bonetti, Ezio Iacocca, Fred Mancoff, Johan Åkerman
Applied Physics Letters - 2011 -
Designer Magnetoplasmonics with Nickel
Nanoferromagnets
Valentina Bonanni, Stefano Bonetti, Tavakol Pakizeh, Zhaleh Pirzadeh, Jianing Chen, Josep Nogues, Paolo Vavassori, Rainer Hillenbrand, Johan Åkerman, Alexandre Dmitriev
Nano Letters - 2011 -
Plasmonic Nickel
Nanoantennas
Jianing Chen, Pablo Albella, Zhaleh Pirzadeh, Pablo Alonso-Gonzalez, Florian Huth, Stefano Bonetti, Valentina Bonanni, Johan Åkerman, Josep Nogues, Paolo Vavassori, Alexandre Dmitriev, Javier Aizpurua, Rainer Hillenbrand
Small - 2011 -
Probing vertically graded anisotropy in FePtCu
films
Randy K. Dumas, Yeyu Fang, B. J. Kirby, Chaolin Zha, Valentina Bonanni, Josep Nogués, Johan Åkerman
Physical Review B - 2011 -
Graded Anisotropy FePtCu
Films
Randy K. Dumas, Chaolin Zha, Yeyu Fang, Valentina Bonanni, J. W. Lau, Josep Nogués, Johan Åkerman
IEEE Transactions on Magnetics - 2011 -
Intrinsic frequency doubling in a magnetic tunnel junction-based spin torque
oscillator
Pranaba Muduli Kishor, Olle Heinonen, Johan Åkerman
Journal of Applied Physics - 2011 -
Bias dependence of perpendicular spin torque and of free- and fixed-layer eigenmodes in MgO-based
nanopillars
Pranaba Muduli Kishor, Olle Heinonen, Johan Åkerman
Physical Review B - 2011 -
Destabilization of serially connected spin-torque oscillators via non-Adlerian
dynamics
Ezio Iacocca, Johan Åkerman
Journal of Applied Physics - 2011 -
Micromagnetic study of switching boundary of a spin torque
nanodevice
Yan Zhou, Johan Åkerman, Jonathan Sun
Applied Physics Letters - 2011 -
Temperature-dependent interlayer coupling in Ni/Co perpendicular pseudo-spin-valve
structures
SM Mohseni, RK Dumas, Yeyu Fang, JW Lau, SR Sani, J Persson, Johan Åkerman
PHYSICAL REVIEW B - 2011 -
High frequency operation of a spin-torque oscillator at low
field
Seyed Majid Mohseni, Sohrab Redjai Sani, Johan Persson, T. N. Anh Nguyen, Sunjae Chung, Yevgen Pogoryelov, Johan Åkerman
Physica Status Solidi Rapid Research Letter - 2011 -
Direct observation of a propagating spin wave induced by spin-transfer
torque
Marco Madami, Stefano Bonetti, Giancarlo Consolo, Silvia Tacchi, Giovanni Carlotti, Gianluca Gubbiotti, F. B. Mancoff, M. A. Yar, Johan Åkerman
Nature Nanotechnology - 2011 -
Modulation of single and double spin torque
oscillators
Pranaba Muduli Kishor, Yevgen Pogoryelov, Giancarlo Consolo, Fred Mancoff, Johan Åkerman
AIP Conference Proceedings - 2011 -
Continuously graded anisotropy in single (Fe53Pt47)100-xCux
films
C. L. Zha, Randy K. Dumas, Yeyu Fang, Valentina Bonanni, Josep Nogués, Johan Åkerman
Applied Physics Letters - 2010 -
Non-linear frequency and amplitude modulation of a nanocontact-based spin-torque
oscillator
Pranaba Muduli Kishor, Yevgen Pogoryelov, Stefano Bonetti, Giancarlo Consolo, Fred Mancoff, Johan Åkerman
Physical Review B - 2010 -
Manifestation of spin-Hall effect in multilayered M/N/M film
structures
Yevgen Pogoryelov, Johan Åkerman
Journal of Physics Conference Series - 2010 -
Oscillatory transient regime in the forced dynamics of a nonlinear auto
oscillator
Yan Zhou, Vasil Tiberkevich, Giancarlo Consolo, Ezio Iacocca, Bruno Azzerboni, Andrei Slavin, Johan Åkerman
Physical Review B - 2010 -
Hole mask colloidal lithography on magnetic multilayers for spin torque
applications
Sohrab R. Sani, Johan Persson, Alexandre Dmitriev, Mikael Käll, Johan Åkerman
Journal of Physics Conference Series. International Conference on Magnetism (ICM 2009). Karlsruhe, GERMANY. JUL 26-31, 2009 - 2010 -
Pseudo Spin Valves Using a (112)-textured D022 Mn2.3-2.4Ga Fixed
Layer
C.-L. Zha, Randy K. Dumas, Johan Persson, S.M. Mohseni, Josep Nogués, Johan Åkerman
IEEE Magnetics Letters - 2010 -
Pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted
anisotropy
C.-L. Zha, Johan Åkerman
Journal of Physics: Conference Series - 2010 -
Exchange-bias-like effects in L1_0 (111)-oriented FePt based pseudo spin
valves
C.-L. Zha, Pranaba Muduli Kishor, Josep Nogués, Johan Åkerman
Journal of Physics: Conference Series - 2010 -
Nanowaveguides and couplers based on hybrid plasmonic
modes
J Tian, Z. Ma, Q. Li, Y. Song, Z. Liu, Q. Yang, C. L. Zha, Johan Åkerman, L. Tong, M. Qiu
Applied Physics Letters - 2010 -
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
Applied Physics Letters - 2010 -
FORC studies of exchange biased NiFe in L1_0(111) FePt-based spin
valve
Y.-Y. Fang, C.-L. Zha, Stefano Bonetti, Johan Åkerman
Journal of Physics Conference Series - 2010 -
Experimental Evidence of Self-Localized and Propagating Spin Wave Modes in Obliquely Magnetized Current-driven
Nanocontacts
Stefano Bonetti, Vasil Tiberkevich, Giancarlo Consolo, Giovanni Finocchio, Pranaba Muduli Kishor, Fred Mancoff, Andrei Slavin, Johan Åkerman
Physical Review Letters - 2010 -
First order reversal curve analysis of graded anisotropy FePtCu
films
Valentina Bonanni, Yeyu Fang, Randy K. Dumas, C. L. Zha, Stefano Bonetti, Josep Nogués, Johan Åkerman
Applied Physics Letters - 2010 -
Pseudo spin valves based on L1(0) (111)-oriented FePt fixed layers with tilted
anisotropy
C. L. Zha, J. Persson, S. Bonetti, Y. Y. Fang, Johan Åkerman
APPLIED PHYSICS LETTERS - 2009 -
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, Josep Nogués, Johan Åkerman
Journal of Applied Physics - 2009 -
Exchange Bias in L1_0 (111)-oriented FePt all-ferromagnetic pseudo spin
valves
C.-L. Zha, Josep Nogués, Johan Åkerman
IEEE Transactions on Magnetics - 2009 -
Study of Pseudo Spin Valves Based on L1_0 (111)-Oriented FePt and FePtCu Fixed Layer With Tilted Magnetocrystalline
Anisotropy
C.-L. Zha, Johan Åkerman
IEEE Transactions on Magnetics - 2009 -
Zero-field precession and hysteretic threshold currents in a spin torque nano device with tilted
polarizer
Yan Zhou, Stefano Bonetti, C.-L. Zha, Johan Åkerman
New Journal of Physics - 2009 -
Pseudo spin valve with L1_0 (111)-oriented FePt fixed
layer
C.-L. Zha, Stefano Bonetti, Johan Persson, Yan Zhou, Johan Åkerman
Journal of Applied Physics - 2009 -
Microwave generation of tilted-polarizer spin torque
oscillator
Yan Zhou, C.-L. Zha, Stefano Bonetti, Johan Persson, Johan Åkerman
Journal of Applied Physics - 2009 -
Capacitance Effect on Microwave Power Spectra of Spin Torque Oscillator with Thermal
Noise
Yan Zhou, F. G. Shin, Bo Guan, Johan Åkerman
IEEE Transactions on Magnetics - 2009 -
Capacitance Enhanced Synchronization of Pairs of Spin-Transfer
Oscillators
Yan Zhou, Stefano Bonetti, Johan Persson, Johan Åkerman
IEEE Transactions on Magnetics - 2009 -
Spin Torque Oscillator Frequency vs. Magnetic Field Angle: The Prospect of Operation beyond 65
GHz
Stefano Bonetti, Pranaba Muduli Kishor, Fred Mancoff, Johan Åkerman
Applied Physics Letters - 2009 -
Pseudo spin valves based on L1_0 (111)-oriented FePt fixed layer with tilted
anisotropy
C.-L. Zha, Johan Persson, Stefano Bonetti, Y.-Y. Fang, Johan Åkerman
Applied Physics Letters - 2009 -
Perpendicular Spin Torque Promotes Synchronization of Magnetic Tunnel Junction based Spin Torque
Oscillators
Yan Zhou, Johan Åkerman
Applied Physics Letters - 2009 -
Spin-torque oscillator with tilted fixed layer
magnetization
Yan Zhou, C.-L. Zha, Stefano Bonetti, Johan Persson, Johan Åkerman
Applied Physics Letters - 2008 -
Tunable intrinsic phase of a spin torque
oscillator
Yan Zhou, Johan Persson, Stefano Bonetti, Johan Åkerman
Applied Physics Letters - 2008 -
Temperature and angular dependences of dynamic spin-polarized resonant tunneling in CoFeB/MgO/NiFe
junctions
C. W. Miller, I. K. Schuller, R. W. Dave, J. M. Slaughter, Yan Zhou, Johan Åkerman
Journal of Applied Physics - 2008 -
Separation of exchange anisotropy and magnetocrystalline anisotropy in Co∕CoO bilayers by means of ac susceptibility
measurements
Johan Åkerman, Valter Ström, K. V. Rao, Dan Dahlberg
Physical Review B - 2007 -
Impact of Device Variability and Circuit Phase Shift in Synchronized Spin Torque
Oscillators
Johan Persson, Yan Zhou, Johan Åkerman
Materials Research Society Symposium Proceedings - 2007 -
Intrinsic phase shift and novel dynamic magnetization states of a spin torque oscillator under ac current
injection
Yan Zhou, Johan Persson, Johan Åkerman
Materials Research Society Symposium Proceedings - 2007 -
Impact of Magnetoresistance and Anisotropy on Synchronized Spin Torque
Oscillators
Yan Zhou, Johan Persson, Johan Åkerman
IEEE-NANO 2007. 7th IEEE Conference on Nanotechnology - 2007 -
Tunable Intrinsic Phase Shift Between a Spin Torque Nano-Oscillator and an AC
Current
Yan Zhou, Johan Persson, Johan Åkerman
IEEE-NANO 2007. 7th IEEE Conference on Nanotechnology - 2007