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Related Papers
2025
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T. Uchimura, J. Han, P. Tang, J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, G.E.W. Bauer, H. Ohno, and S. Fukami, "Unconventional Spin Hall Magnetoresistance in Noncollinear Antiferromagnet/Heavy Metal Stacks," Physical Review Letters, vol. 134, pp. 096701(7 pages), March 2025.
DOI:10.1103/PhysRevLett.134.096701
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J. Han, J.-Y. Yoon, H. Ohno, and S. Fukami, "Unconventional responses in non-collinear antiferromagnets," Newton (Cell Press), vol. 1, pp. 100012(9 pages), March 2025.
DOI:10.1016/j.newton.2025.100012
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J.-Y. Yoon, Y. Takeuchi, R. Takechi, J. Han, T. Uchimura, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami, "Electrical mutual switching in a noncollinear-antiferromagnetic–ferromagnetic heterostructure," Nature Communications, vol. 16, pp. 1171(8 pages), February 2025.
DOI:10.1038/s41467-025-56157-6
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D. Sztenkiel, K. Gas, N.G. Szwacki, M. Foltyn, C. Śliwa, T. Wojciechowski, J.Z. Domagala, D. Hommel, M. Sawicki, and T. Dietl, "Electric-field manipulation of magnetization in an insulating dilute ferromagnet through piezoelectromagnetic coupling," Communications Materials, vol. 6, pp. 16(13 pages), January 2025.
DOI:10.1038/s43246-024-00711-0
2024
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S. Chiba, Y. Marui, H. Ohno, and S. Fukami, "Comparative Study of Current-Induced Torque in Cr/CoFeB/MgO and W/CoFeB/MgO," Nano Letters, vol. 24, pp. 14028-14033, October 2024.
DOI:10.1021/acs.nanolett.4c03809
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B. Dieny, S. Aggarwal, V.B. Naik, S. Couet, T. Coughlin, S. Fukami, K. Garello, J. Guedj, J.A.C. Incorvia, L. Lebrun, K.-J. Lee, D. Leonelli, Y. Noh, S. Salimy, S. Soss, L. Thomas, W. Wang, and D.C. Worledge, "Impact of External Magnetic Fields on STT-MRAM: An Application Note," IEEE Electron Devices Magazine, vol. 2, pp. 52-59, September 2024.
DOI:10.1109/MED.2024.3442086
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K.P. Kluczyk, K. Gas, M.J. Grzybowski, P. Skupiński, M.A. Borysiewicz, T. Fąs, J. Suffczyński, J.Z. Domagala, K. Grasza, A. Mycielski, M. Baj, K.H. Ahn, K. Výborný, M. Sawicki, and M.G.-Borysiewicz, "Coexistence of anomalous Hall effect and weak magnetization in a nominally collinear antiferromagnet MnTe," Physical Review B, vol. 110, pp. 155201(12pages), October 2024.
DOI:10.1103/PhysRevB.110.155201
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J.A.M.-Rodarte, K. Gas, M.H-Zaldívar, D. Hommel, M. Sawicki, and M.H.D. Guimarães, “Spin Hall magnetoresistance in Pt/(Ga,Mn)N devices," Applied Physics Letters, vol. 125, pp. 152404(6 pages), October 2024.
DOI:10.1063/5.0218364
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M. Elyasi, S. Kanai, H. Ohno, S. Fukami, and G.E.W. Bauer, "Effect of nonlinear magnon interactions on stochastic magnetization switching," Physical Review B, vol. 110, pp. 094433(11 pages), September 2024.
DOI:10.1103/PhysRevB.110.094433
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K. Djeghdi, D. Karpov, S.N. Abdollahi, K. Godlewska, R. Iseli, M. Holler, C. Donnelly, T. Yuasa, H. Sai, U.B. Wiesner, U. Steiner, B.D. Wilts, M. Musya, S. Fukami, H. Ohno, A. Diaz, J. Llandro, and I. Gunkel, "Block Copolymer-Directed Single-Diamond Hybrid Structures Derived from X-ray Nanotomography," ACS Nano, vol. 18, pp. 26503-26513, September 2024.
DOI:10.1021/acsnano.3c10669
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A. Ciechan, P. Dłużewski, S. Kret, K. Gas, L. Scheffler, C. Gould, J. Kleinlein, M. Sawicki, L.W. Molenkamp, and P. Bogusławski, "Coexistence of antiferromagnetic cubic and ferromagnetic tetragonal polymorphs in epitaxial CuMnSb films," Physical Review B, vol. 110, pp. 014436(15 pages), July 2024.
DOI:10.1103/PhysRevB.110.014436
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R. Sharma, T. Ngo, E. Raimondo, A. Giordano, J. Igarashi, B. Jinnai, S. Zhao, J. Lei, Y.-X. Guo, G. Finocchio, S. Fukami, H. Ohno, and H. Yang," Nanoscale spin rectifiers for harvesting ambient radiofrequency energy," Nature Electronics, vol. 7, pp. 653–661, July 2024.
DOI:10.1038/s41928-024-01212-1
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D. Karpov, K. Djeghdi, M. Holler, S.N. Abdollahi, K. Godlewska, C. Donnelly, T. Yuasa, H. Sai, U.B. Wiesner, B.D. Wilts, U. Steiner, M. Musya, S. Fukami, H. Ohno, I. Gunkel, A. Diaz, and J. Llandro, "High-resolution three-dimensional imaging of topological textures in nanoscale single-diamond networks," Nature Nanotechnology, July 2024.
DOI:10.1038/s41565-024-01735-w
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M. Kawahara, Y. Abe, K. Takano, F.J. Heremans, J. Ishihara, S.E. Sullivan, C. Vorwerk, V. Somjit, C.P. Anderson, G. Wolfowiczwas, M. Kohda, S. Fukami, G. Galli, D.D. Awschalom, H. Ohno, and S. Kanai, "T Polarization-dependent photoluminescence of Ce-implanted MgO and MgAl2O4," Applied Physics Express, vol. 17, pp. 072004(4 pages), July 2024.
DOI:10.35848/1882-0786/ad59f4
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R. Ota, K. Kobayashi, K. Hayakawa, S. Kanai, K.Y. Çamsarı, H. Ohno, and S. Fukami, "Voltage-insensitive stochastic magnetic tunnel junctions with double free layers," Applied Physics Letters, vol.125, pp. 022406(6 pages), July 2024.
DOI:10.1063/5.0219606
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H. Kaneko, R. Ota, K. Kobayashi, S. Kanai, M. Elyasi, G.E.W. Bauer, H. Ohno, and S. Fukami, "Temperature dependence of the properties of stochastic magnetic tunnel junction with perpendicular magnetization," Applied Physics Express, vol. 17, pp. 053001(4 pages), May 2024.
DOI:10.35848/1882-0786/ad43b0
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K. Selcuk, S. Kanai, R. Ota, H. Ohno, S. Fukami, and K.Y. Camsari, "Double-free-layer stochastic magnetic tunnel junctions with synthetic antiferromagnets," Physical Review Applied, vol. 21, pp. 054002(12 pages), May 2024.
DOI:10.1103/PhysRevApplied.21.054002
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J. Han, T. Uchimura, Y. Araki, J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami, "Room-temperature flexible manipulation of the quantum-metric structure in a topological chiral antiferromagnet," Nature Physics, vol. 20, pp. 1110–1117, April 2024.
DOI:10.1038/s41567-024-02476-2
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M. Gołębiewski, R. Hertel, M. d’Aquino, V. Vasyuchka, M. Weiler, P. Pirro, M. Krawczyk, S. Fukami, H. Ohno, and J. Llandro, "Collective Spin-Wave Dynamics in Gyroid Ferromagnetic Nanostructures," ACS Applied Materials and Interfaces, vol. 16, pp. 22177-22188, April 2024.
DOI:10.1021/acsami.4c02366
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N.S. Singh, K. Kobayashi, Q. Cao, K. Selcuk, T. Hu, S. Niazi, N.A. Aadit, S. Kanai, H. Ohno, S. Fukami, and K.Y. Camsari, "CMOS plus stochastic nanomagnets enabling heterogeneous computers for probabilistic inference and learning," Nature Communications, vol. 15, pp. 2685(9 pages), March 2024.
DOI:10.1038/s41467-024-46645-6
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M.J. Grzybowski, C. Autieri, J. Domagala, C. Krasucki, A. Kaleta, S. Kret, K. Gas, M. Sawicki, R. Bożek, J. Suffczyński, and W. Pacuski, "Wurtzite vs. rock-salt MnSe epitaxy: electronic and altermagnetic properties," Nanoscale, vol. 16, pp. 6259–6267, March 2024.
DOI:10.1039/D3NR04798A
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M. Bhukta, T. Dohi, V.K. Bharadwaj, R. Zarzuela, M.-A. Syskaki, M. Foerster, M.A. Niño, J. Sinova, R. Frömter, and M. Kläui, "Homochiral antiferromagnetic merons, antimerons and bimerons realized in synthetic antiferromagnets," Nature Communications, vol. 15, pp. 1641(10 pages), February 2024.
DOI:10.1038/s41467-024-45375-z
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M.-A. Syskaki, T. Dohi, B. Bednarz, S.O. Filnov, S.A. Kasatikov, M. Bhukta, A. Smekhova, R. Pachat, J.W. van der Jagt, S. Ono, D. Ravelosona, J. Langer, M. Kläui, L.H. Diez, and G. Jakob, "Magneto-ionic modulation of the interlayer exchange interaction in synthetic antiferromagnets," Applied Physics Letters, vol. 124, pp. 082408(7 pages), February 2024.
DOI:10.1063/5.0198750
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J. Igarashi, B. Jinnai, K. Watanabe, T. Shinoda, T. Funatsu, H. Sato, S. Fukami, and H. Ohno, "Single-nanometer CoFeB/MgO magnetic tunnel junctions with high-retention and high-speed capabilities," npj Spintronics, vol. 2, pp. 1(9pages), January 2024.
DOI:10.1038/s44306-023-00003-2
2023
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T. Shinoda, J. Igarashi, B. Jinnai, S. Fukami, and H. Ohno, "Pitch Scaling Prospect of Ultra-Small Magnetic Tunnel Junctions for High-Density STT-MRAM: Effects of Magnetostatic Interference from Neighboring Bits," IEEE Electron Device Letters, vol. 45, pp. 184-187, December 2023.
DOI:10.1109/LED.2023.3345743
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D. Abdelrahman, R. Iseli, M. Musya, B. Jinnai, S. Fukami, T. Yuasa, H. Sai, U.B. Wiesner, M. Saba, B.D. Wilts, U. Steiner, J. Llandro, and I. Gunkel, "Directed Self-Assembly of Diamond Networks in Triblock Terpolymer Films on Patterned Substrates," ACS Applied Materials and Interfaces, vol. 15, pp. 57981-57991, November 2023.
DOI:10.1021/acsami.3c10619
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B. Chen, M. Zeng, K.H. Khoo, D. Das, X. Fong, S. Fukami, S. Li, W. Zhao, S.S.P. Parkin, S.N. Piramanayagam, and S.T. Lim, "Spintronic devices for high-density memory and neuromorphic computing – A review," Materials Today, vol. 70, pp. 193-217, November 2023.
DOI:10.1016/j.mattod.2023.10.004
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Y. Marui, M. Kawaguchi, S. Sumi, H. Awano, K. Nakamura, and M. Hayashi, “Spin and orbital Hall currents detected via current-induced magneto-optical Kerr effect in V and Pt ," Physical Review B, vol. 108, pp. 144436(11 pages), October 2023.
DOI:10.1103/PhysRevB.108.144436
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T. Dohi, M. Weißenhofer, N. Kerber, F. Kammerbauer, Y. Ge, K. Raab, J. Zázvorka, M.-A. Syskaki, A. Shahee, M. Ruhwedel, T. Böttcher, P. Pirro, G. Jakob, U. Nowak, and M. Kläui, "Enhanced thermally-activated skyrmion diffusion with tunable effective gyrotropic force," Nature Communications, vol. 14, pp. 5424(10 pages), September 2023.
DOI:10.1038/s41467-023-40720-0
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J.-Y. Yoon, P. Zhang, C.-T. Chou, Y. Takeuchi, T. Uchimura, J.T. Hou, J. Han, S. Kanai, H. Ohno, S. Fukami, and L. Liu, "Handedness anomaly in a non-collinear antiferromagnet under spin-orbit torque," Nature Materials, vol. 22, pp. 1106-1113, August 2023.
DOI:10.1038/s41563-023-01620-2
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A-S. Koshikawa, J. Llandro, M. Ohzeki, S. Fukami, H. Ohno, and N. Leo, "Magnetic order in nanoscale gyroid networks," Physical Review B vol. 108, 024414 (10 pages), June 2023.
DOI:10.1103/PhysRevB.108.024414
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H. Masuda, Y. Yamane, T. Seki, K. Raab, T. Dohi, R. Modak, K. Uchida, J. Ieda, M. Klaui, and K. Takanashi, "Magnetization switching process by dual spin-orbit torque in interlayer exchange-coupled systems," Applied Physics Letters vol. 122, 162402(7 pages), April 2023.
DOI:10.1063/5.0140328
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Y. Sato, Y. Takeuchi, Y. Yamane, J. -Y. Yoon, S. Kanai, J. Ieda, H. Ohno and S. Fukami,"Thermal stability of non-collinear antiferromagnetic Mn3Sn nanodot," Applied Physics Letters vol. 122, 122404(6 pages), March 2023.
DOI:10.1063/5.0135709
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J. Han, R. Cheng, L. Liu, H. Ohno and S. Fukami, "Coherent antiferromagnetic spintronics," Nature Materials vol. 22 , pp. 684-695 , March 2023.
DOI:10.1038/s41563-023-01492-6
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S. Chowdhury, A. Grimaldi, N. A. Aadit, S. Niazi, M. Mohseni, S. Kanai, H. Ohno, S. Fukami, L. Theogarajan, G. Finocchio, S. Datta, and K. Y. Camsari, "A full-stack view of probabilistic computing with p-bits: devices, architectures and algorithms," IEEE Journal on Exploratory Solid-State Computational Devices and Circuits, vol. 9, (11 pages), March 2023.
DOI:10.1109/JXCDC.2023.3256981
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M. Shinozaki, J. Igarashi, S. Iwakiri, T. Kitada, K. Hayakawa, B. Jinnai, T. Otsuka, S. Fukami, K. Kobayashi, and H. Ohno,"Nonlinear conductance in nanoscale CoFeB/MgO magnetic tunnel junctions with perpendicular easy axis," Physical Review B vol. 107, 094436(8 pages), February 2023.
DOI:10.1103/PhysRevB.107.094436
2022
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K. Kobayashi, K. Hayakawa, J. Igarashi, W. A. Borders, S. Kanai, H.
Ohno and S. Fukami, "External-Field-Robust Stochastic Magnetic Tunnel Junctions Using a Free Layer with Synthetic Antiferromagnetic Coupling," Physical Review Applied vol. 18, 054085(9 pages), November 2022.
DOI:10.1103/PhysRevApplied.18.024075
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J. Gibbons, T. Dohi, V. P. Amin, F. Xue, H. Ren, J.-W. Xu, H. Arava,
S. Shim, H. Saglam, Y. Liu, J. E. Pearson, N. Mason, A. K.
Petford-Long, P. M. Haney, M. D. Stiles, E. E. Fullerton, A. D. Kent,
S. Fukami, and A. Hoffmann, "Large Exotic Spin Torques in
Antiferromagnetic Iron Rhodium," Physical Review Applied vol. 18,
024075(12 pages), August 2022.
DOI:10.1103/PhysRevApplied.18.054085
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R. R. Chowdhury, S. DuttaGupta, C. Patra, A. Kataria, S. Fukami, and
R. P. Singh, "Anisotropic magnetotransport in the layered
antiferromagnet TaFe1.25Te3," Physical Review Materials vol. 6,
084408(8 pages) August 2022.
DOI:10.1103/PhysRevMaterials.6.084408
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T. Funatsu, S. Kanai, J. Ieda, S. Fukami, and H. Ohno, "Local
bifurcation with spin-transfer torque in superparamagnetic tunnel
junctions," Nature Communications vol. 13, 4079(8 pages) July 2022.
DOI:10.1038/s41467-022-31788-1
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H. Masuda, T. Seki, Y. Yamane, R. Modak, K. Uchida, J. Ieda, Y.-C.
Lau, S. Fukami, and K. Takanashi, "Large Antisymmetric Interlayer
Exchange Coupling Enabling Perpendicular Magnetization Switching by an
In-Plane Magnetic Field," Physical Review Applied vol. 17,
054036(9 pages), May 2022.
DOI:10.1103/PhysRevApplied.17.054036
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T. Uchimura, J. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, R. Takechi, K.
Kishi, Y. Yamane, S. DuttaGupta, J. Ieda, H. Ohno, and S. Fukami,
"Observation of domain structure in non-collinear antiferromagnetic
Mn3Sn thin films by magneto-optical Kerr effect,"
Applied Physics Letters vol. 120, 172405 (5 pages), April 2022.
DOI: 10.1063/5.0089355
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Y. Yamane, S. Fukami, and J. Ieda,
"Theory of Emergent Inductance with Spin-Orbit Coupling Effects,"
Physical Review Letters vol. 128, 147201(6 pages), April 2022.
DOI:10.1103/PhysRevLett.128.147201
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S. Kanai, F. J. Heremans, H. Seo, G. Wolfowicz, C. P. Anderson, S. E.
Sullivan, M. Onizhuk, G. Galli, D. D. Awschalom, and H. Ohno,
"Generalized scaling of spin qubit coherence in over 12,000 host materials,"
Proceedings of National Academy of Science of the United States of
America vol. 119, e2121808119 (8 pages) April 2022.
DOI:10.1073/pnas.2121808119
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D. Kumar, T. Jin, R. Sbiaa, M. Klaui, S. Bedanta, S. Fukami, D.
Ravelosona, S. Yang, X. Liu, and S.N. Piramanayagam, "Domain wall memory:
Physics, materials, and devices," Physics Reports vol.
958, pp. 1-35, March 2022.
DOI:10.1016/j.physrep.2022.02.001
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Y. Takeuchi, R. Okuda, J. Igarashi, B. Jinnai, T. Saino, S. Ikeda, S.
Fukami and H. Ohno,
"Nanometer-thin L10-MnAl film with B2-CoAl
underlayer for high-speed and high-density STT-MRAM: Structure and
magnetic properties,"
Applied Physics Letters vol. 120, 052404 (5
pages),
February 2022.
DOI:10.1063/5.0077874
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J. Kaiser, W. A. Borders, K. Y. Camsari, S. Fukami, H. Ohno, and S.Datta,
"Hardware-Aware In Situ Learning Based on Stochastic Magnetic Tunnel Junctions,"
Physical Review Applied vol. 17, 014016 (12 pages),
January 2022.
DOI:10.1103/PhysRevApplied.17.014016
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R. R. Chowdhury, C. Patra, S. DuttaGupta, S. Satheesh, S. Dan, S. Fukami, and R. P. Singh,
"Modification of unconventional Hall effect
with doping at the nonmagnetic site in a two-dimensional van der Waals
ferromagnet,"
Physical Review Materials vol. 6, 014002 (9 pages),
January 2022.
DOI:10.1103/PhysRevMaterials.6.014002
2021
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Y. Takeuchi, E. C. I. Enobio, B. Jinnai, H. Sato, S. Fukami, and H.Ohno,
"Temperature dependence of intrinsic critical current in perpendicular easy axis CoFeB/MgO magnetic tunnel junctions,"
Applied Physics Letters vol. 119, 242403 (5 pages), December 2021.
DOI:10.1063/5.0072957
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M. Zahedinejad, H. Fulara, R. Khymyn, A. Houshang, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, and J. Akerman,
"Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic computing,"
Nature Materials, vol. 21, pp. 81-87, November 2021.
DOI:10.1038/s41563-021-01153-6
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K. Kobayashi, W. A. Borders, S. Kanai, K. Hayakawa, H. Ohno, and S. Fukami,
"Sigmoidal curves of stochastic magnetic tunnel junctions with perpendicular easy axis,"
Applied Physics Letters vol. 119, 132406 (5 pages), September 2021.
DOI:10.1063/5.0065919
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R. Roy Chowdhury, S. DuttaGupta, C. Patra, O. A. Tretiakov, S. Sharma, S. Fukami, H. Ohno, and R. P. Singh,
"Unconventional Hall effect and its variation with Co-doping in van der Waals Fe3GeTe2,"
Scientific Reports vol. 11, 14121 (10 pages), July 2021.
DOI:10.1038/s41598-021-93402-6
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S. Iihama, Q. Remy, J. Igarashi, G. Malinowski, M. Hehn, and S. Mangin,
"Spin-transport Mediated Single-shot All-optical Magnetization Switching of Metallic Films,"
Journal of the Physical Society of Japan vol. 90, 081009 (13 pages), June 2021.
DOI:10.7566/JPSJ.90.081009
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T. Dohi, S. Fukami, and H. Ohno,
"Influence of domain wall anisotropy on the current-induced hysteresis loop shift for quantification of the Dzyaloshinskii-Moriya interaction,"
Physical Review B vol. 103, 214450 (9 pages), June 2021.
DOI:10.1103/PhysRevB.103.214450
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J.-Y. Yoon, Y. Takeuchi, S. DuttaGupta, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami,
"Correlation of anomalous Hall effect with structural parameters and magnetic ordering in Mn3+xSn1-x thin films,"
AIP Advances vol. 11, 065318 (6 pages), June 2021.
DOI:10.1063/5.0043192
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R. Sharma, R. Mishra, T. Ngo, Y. Guo, S. Fukami, H. Sato, H. Ohno, and H. Yang,
"Electrically connected spin-torque oscillators array for 2.4-GHz WiFi band transmission and energy harvesting,"
Nature Communications vol. 12, 2924 (10 pages), May 2021.
DOI:10.1038/s41467-021-23181-1
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Y. Takeuchi, Y. Yamane, J. Yoon, R. Itoh, B. Jinnai, S. Kanai, J. Ieda, S. Fukami, and H. Ohno,
"Chiral-spin rotation of non-collinear antiferromagnet by spin-orbit torque,"
Nature Materials, vol. 20, pp. 1364-1370, May 2021.
DOI:10.1103/10.1038/s41563-021-01005-3
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Q. Shao, P. Li, L. Liu, H. Yang, S. Fukami, A. Razavi, H. Wu, F. Freimuth, Y. Mokrousov, M. D. Stiles, S. Emori, A. Hoffmann, J. Akerman, K. Roy, J. Wang, S. Yang, K. Garellob, and W. Zhang,
"Roadmap of spin-orbit torques,"
IEEE Transactions on Magnetics, vol. 57, 800439(39 pages), May 2021.
DOI:10.1109/TMAG.2021.3078583
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K. Y. Camsari, M. M. Torunbalci, W. A. Borders, H. Ohno, and S. Fukami,
"Double-Free-Layer Magnetic Tunnel Junctions for Probabilistic Bits,"
Physical Review Applied, vol. 15, 044049 (10 pages), April 2021.
DOI:10.1103/PhysRevApplied.15.044049
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G. Wolfowicz, F. J. Heremans, C. P. Anderson, S. Kanai, H. Seo, A. Gali, G. Galli, and D. D. Awschalom,
"Quantum guidelines for solid-state spin defects,"
Nature Reviews Materials, vol. 6, pp. 906-925, April 2021.
DOI:10.1038/s41578-021-00306-y
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S. Kanai, K. Hayakawa, H. Ohno, and S. Fukami,
"Theory of relaxation time of stochastic nanomagnets,"
Physical Review B, vol. 103, 094423 (12 pages), March 2021.
DOI:10.1103/PhysRevB.103.094423
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K. Hayakawa, S. Kanai, T. Funatsu, J. Igarashi, B. Jinnai, W. A. Borders, H. Ohno, and S. Fukami,
"Nanosecond Random Telegraph Noise in In-Plane Magnetic Tunnel Junctions,"
Physical Review Letters, vol. 126, 117202 (6 pages), March 2021.
DOI:10.1103/PhysRevLett.126.117202
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J. Ieda and Y. Yamane,
"Intrinsic and extrinsic tunability of Rashba spin-orbit coupled emergent inductors,"
Physical Review B, vol. 103, L100402 (5 pages), March 2021.
DOI:10.1103/PhysRevB.103.L100402
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C. Zhang, Y. Takeuchi, S. Fukami, and H. Ohno,
"Field-free and sub-ns magnetization switching of magnetic tunnel junctions by combining spin-transfer torque and spin-orbit torque,"
Applied Physics Letters, vol. 118, 092406 (4 pages), March 2021.
DOI:10.1063/5.0039061
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B. Jinnai, J. Igarashi, K. Watanabe, E.C.I. Enobio, S. Fukami, and H. Ohno,
"Coherent magnetization reversal of a cylindrical nanomagnet in shape-anisotropy magnetic tunnel junctions,"
Applied Physics Letters, vol. 118, 082404 (5 pages), February 2021.
DOI:10.1063/5.0043058
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A. K. Dhiman, T. Dohib, W. Dobrogowski, Z. Kurant, I. Sveklo, S. Fukami, H. Ohno, and A. Maziewski,
"Magnetization processes and magnetic domain structures in Ta/CoFeB/MgO stacks,"
Journal of Magnetism and Magnetic Materials, vol. 529, 167699 (17 pages), February 2021.
DOI:10.1016/j.jmmm.2020.167699
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J. Igarashi, B. Jinnai, V. Desbuis, S. Mangin, S. Fukami, and H. Ohno,
"Temperature dependence of the energy barrier in X/1X nm shape-anisotropy magnetic tunnel junctions,"
Applied Physics Letters, vol. 118, 012409 (5 pages), January 2021.
DOI:10.1063/5.0029031
2020
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M. Natsui, A. Tamakoshi, H. Honjo, T. Watanabe, T. Nasuno, C. Zhang, T. Tanigawa, H. Inoue, M. Niwa, T. Yoshiduka, Y. Noguchi, M. Yasuhira, Y. Ma, H. Shen, S. Fukami, H. Sato, S. Ikeda, H. Ohno, T. Endoh, and T. Hanyu,
"Dual-Port SOT-MRAM Achieving 90-MHz Read and 60-MHz Write Operations Under Field-Assistance-Free Condition,"
IEEE Journal of Solid-State Circuits, vol. 56, pp. 1116-1128, December 2020.
DOI:10.1109/JSSC.2020.3039800
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J. Igarashi, Q. Remy, S. Iihama, G. Malinowski, M. Hehn, J. Gorchon, J. Hohlfeld, S. Fukami, H. Ohno, and S. Mangin,
"Engineering Single-Shot All-Optical Switching of Ferromagnetic Materials,"
Nano Letters, vol. 20, 8654-8660, November 2020.
DOI:10.1021/acs.nanolett.0c03373
-
M. Shinozaki, T. Dohi, J. Igarashi, J. Llandro, S. Fukami, H. Sato, and H. Ohno,
"Probing edge condition of nanoscale CoFeB/MgO magnetic tunnel junctions by spin-wave resonance,"
Applied. Physics Letters, vol. 117, 202404 (4 pages), October 2020.
DOI:10.1063/5.0020591
-
S. DuttaGupta, A. Kurenkov, O. A. Tretiakov, G. Krishnaswamy, G. Sala, V. Krizakova, F. Maccherozzi, S. S. Dhesi, P. Gambardella, S. Fukami, and H. Ohno,
"Spin-orbit torque switching of an antiferromagnetic metallic heterostructure,"
Nature Communications, vol. 11, 5715 (8 pages), November 2020.
DOI:10.1038/s41467-020-19511-4
-
G. K. Krishnaswamy, A. Kurenkov, G. Sala, M. Baumgartner, V. Krizakova, C. Nistor, F. Maccherozzi, S. S. Dhesi, S. Fukami, H. Ohno, and P. Gambardella,
"Multidomain Memristive Switching of Pt38Mn62/[Co/Ni]n Multilayers,"
Physical Review Applied, vol. 14, 044036 (10 pages), October 2020.
DOI:10.1103/PhysRevApplied.14.044036
-
Q. Remy, J. Igarashi, S. Iihama, G. Malinowski, M. Hehn, J. Gorchon, J. Hohlfeld, S. Fukami, H. Ohno, and S. Mangin,
"Energy Efficient Control of Ultrafast Spin Current to Induce Single Femtosecond Pulse Switching of a Ferromagnet,"
Advanced Science, vol. 7, 2001996 (8 pages), October 2020.
DOI:10.1002/advs.202001996
-
K. Ishibashi, S. Iihama, Y. Takeuchi, K. Furuya, S. Kanai, S. Fukami, and S. Mizukami,
"All-optical probe of magnetization precession modulated by spin-orbit torque,"
Applied Physics Lertters, vol. 117, 122403 (4 pages), September 2020.
DOI:10.1063/5.0020852
-
S. Fukami, V. O. Lorenz, and O. Gomonay,
"Antiferromagnetic spintronics,"
Journal of Applied Physics Letters, vol. 128, 070401 (3 pages), August 2020.
DOI:10.1063/5.0023614
-
H. Fulara, M. Zahedinejad, R. Khymyn, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, and J. Akerman,
"Giant voltage-controlled modulation of spin Hall nano-oscillator damping,"
Nature Communications, vol. 11, 4006 (7 pages), August 2020.
DOI:10.1038/s41467-020-17833-x
-
K. V. De Zoysa, S. DuttaGupta, R. Itoh, Y. Takeuchi, H. Ohno, and S. Fukami,
"Composition dependence of spin-orbit torque in Pt1-xMnx/CoFeB heterostructures,"
Applied Physics Letters, vol. 117, 012402 (4 pages), July 2020.
DOI:10.1063/5.0011448
-
S. Fukami, W. A. Borders, A. Z. Pervaiz, K. Y. Camsari, S. Datta, and H. Ohno,
"Probabilistic computing based on spintronics technology,"
Conference Proceedings, 2020 IEEE Silicon Nanoelectronics Workshop, 21-22, July 2020.
DOI:10.1109/SNW50361.2020.9131622
-
A. Kurenkov, S. Fukami, and H. Ohno,
"Neuromorphic computing with antiferromagnetic spintronics,"
Journal of Applied Physics, vol. 128, 010902 (12 pages), July 2020.
DOI:10.1063/5.0009482
-
O. Stejskal, A. Thiaville, J. Hamrle, S. Fukami, and H. Ohno,
"Current distribution in metallic multilayers from resistance measurements,"
Physical Review B, vol. 101, 235437 (9 pages), June 2020.
DOI:10.1103/PhysRevB.101.235437
-
B. Jinnai, K. Watanabe S. Fukami, and H. Ohno,
"Scaling magnetic tunnel junction down to single-digit nanometers-Challenges and prospects,"
Applied Physics Letters, vol. 116, 160501 (7 pages), April 2020.
DOI:10.1063/5.0004434
-
J. Llandro, D. M. Love, A. KovacsJan, J. Caron, K. N. Vyas, A. Ka-kay, R. Salikhov, K. Lenz, J. Fassbender, M. R. J. Scherer, C. Cimorra, U. Steiner, C. H. W. Barnes, R. E. Dunin-Borkowski, S. Fukami, and H. Ohno,
"Visualizing Magnetic Structure in 3D Nanoscale Ni-Fe Gyroid Networks,"
Nano Letters, vol. 20, 3642-3650, April 2020.
DOI:10.1021/acs.nanolett.0c00578
-
J. Ishihara, G. Kitazawa, Y. Furusho, Y. Ohno, H. Ohno, and K. Miyajima,
"Zero-field spin precession dynamics of high-mobility two-dimensional electron gas in persistent spin helix regime,"
Physical Review B, vol. 101, 094438 (5 pages), March 2020.
DOI:10.1103/PhysRevB.101.094438
-
N. Keswani, Y. Nakajima, N. Chauhan, T. Ukai, H. Chakraborti, K. D. Gupta, T. Hanajiri, S. Kumar, Y. Ohno, H. Ohno, and P. Das,
"Complex switching behavior of magnetostatically coupled single-domain nanomagnets probed by micro-Hall magnetometry,"
Applied Physics Letters, vol. 116, 102401 (5 pages), March 2020.
DOI:10.1063/1.5144841
-
J. Grollier, D. Querlioz, K. Y. Camsari, K. Everschor-Sitte, S. Fukami, and M. D. Stiles,
"Neuromorphic spintronics,"
Nature Electronics, vol. 3, pp. 360-370, March 2020.
DOI:10.1038/s41928-019-0360-9
2019
-
R. Itoh, Y. Takeuchi, S. DuttaGupta, S. Fukami, and H. Ohno,
"Stack structure and temperature dependenceof spin-orbit torques in heterostructures withantiferromagnetic PtMn,"
Applied Physics Letters, vol. 115, 242404 (4 pages), December 2019.
DOI:10.1063/1.5129829
-
J. Yoon, Y. Takeuchi, R. Itoh, S. Kanai, S. Fukami, and H. Ohno,
"Crystal orientation and anomalaous Hall effect of sputter-deposited non-colinear antiferromagnetic Mn3Sn thin films,"
Applied Physics Express, vol. 13, 013001 (4 pages), December 2019.
DOI.org/10.7567/1882-0786/ab5874
-
T. Dohi, S. DuttaGupta, S. Fukami, and H. Ohno,
"Formation and current-induced motion of synthetic antiferromagnetic skyrmion bubbles,"
Nature communications, vol. 10, 5153 (6 pages), November 2019.
DOI.org/10.1038/s41467-019-13182-6
-
Y. -C. Lau, Z. Chi, T. Taniguchi, M. Kawaguchi, G. Shibata, N. Kawamura, M. Suzuki, S. Fukami, A. Fujimori, H. Ohno, and M. Hayashi,
"Giant perpendicular magnetic anisotropy in Ir/Co/Pt multilayers,"
Physical Review Materials, vol. 3, 104419 (8 pages), October 2019.
DOI:10.1103/PhysRevMaterials.3.104419
-
T. Saino, S. Kanai, M. Shinozaki, B. Jinnai, H. Sato, S. Fukami, and H. Ohno,
"Write-error rate of nanoscale magnetic tunnel junctions in the precessional regime,"
Applied Physics Letters, vol. 115, 142406 (5 pages), October 2019.
DOI:10.1063/1.5121157
-
W. A. Borders, A. Z. Pervaiz, S. Fukami, K. Y. Camsari, H. Ohno, and S. Datta,
"Integer factorization using stochastic magnetic tunnel junctions,"
Nature, vol. 573, 390-393, September 2019.
DOI:10.1038/s41586-019-1557-9
-
S. Gupta, F. Matsukura, and H. Ohno,
"Properties of sputtered full Heusler alloy Cr2MnSb and its application in a magnetic tunnel junction,"
Journal of Physics D: Applied Physics, vol. 52, 495002 (6 pages), September 2019.
DOI:10.1088/1361-6463/ab3fc6
-
L. Chen, J. Zhao, D. Weiss, C.H. Back, F. Matsukura, and H. Ohno,
"Magnetization dynamics and related phenomena in semiconductors with ferromagnetism,"
Journal of Semiconductors, vol. 40, 081502 (8 pages), August 2019.
DOI:10.1088/1674-4926/40/8/081502
-
T. Dietl, A. Bonanni, and H. Ohno,
"Families of magnetic semiconductors - an overview,"
Journal of Semiconductors, vol. 40, 080301 (5 pages), August 2019.
DOI:10.1088/1674-4926/40/8/080301
-
A. Okada, Y. Takeuchi., K. Furuya, C. Zhang, H. Sato, S. Fukami, and H. Ohno,
"Spin-Pumping-Free Determination of Spin-Orbit Torque Efficiency from Spin-Torque Ferromagnetic Resonance,"
Physical Review Applied, vol. 12, 014040 (11 pages), July 2019.
DOI:10.1103/PhysRevApplied.12.014040
-
A. Kurenkov, S. DuttaGupta, C. Zhang, S. Fukami, Y. Horio, and H. Ohno,
"Artificial neuron and synapse realized in an antiferromagnet/ferromagnet heterostructure using dynamics of spin-orbit torque switching,"
Advanced Materials, vol. 31, 1900636 (7 pages), April 2019.
DOI:10.1002/adma.201900636
-
T. Dohi, S. DuttaGupta, S. Fukami, and H. Ohno,
"Reversal of domain wall chirality with ferromagnet thickness in W/(Co)FeB/MgO systems,"
Applied Physics Letters, vol. 114, 042405 (5 pages), January 2019.
DOI:10.1063/1.5084095
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Y. Takahashi, Y. Takeuchi, C. Zhang, B. Jinnai, S. Fukami, and H. Ohno,
"Spin-orbit torque-induced switching of in-plane magnetized elliptic nanodot arrays with various easy-axis directions measured by differential planar Hall resistance,"
Applied Physics Letters, vol. 114, 012410 (4 pages), January 2019.
DOI:10.1063/1.5075542
2018
-
H. Sato, P. Chureemart, F. Matsukura, R. W. Chantrell, H. Ohno, and R. F. L. Evans,
"Temperature-dependent properties of CoFeB/MgO thin films: Experiments versus simulations,"
Physical Review B, vol. 98, 214428 (7 pages), December 2018.
DOI:10.1103/PhysRevB.98.214428
-
B. Jinnai, H. Sato, S. Fukami, and H. Ohno,
"Scalability and wide temperature range operation of spin-orbit torque switching devices using Co/Pt multilayer nanowires,"
Applied Physics Letters, vol. 113, 212403 (4 pages), November 2018.
DOI:10.1063/1.5045814
-
S. DuttaGupta, R. Itoh, S. Fukami, and H. Ohno,
"Angle dependent magnetoresistance in heterostructures with antiferromagnetic and non-magnetic metals,"
Applied Physics Letters, vol. 113, 202404 (5 pages), November 2018.
DOI:10.1063/1.5049566
-
M. Bersweiler, E. C. I. Enobio, S. Fukami, H. Sato, and H. Ohno,
"An effect of capping-layer material on interfacial anisotropy and thermal stability factor of MgO/CoFeB/Ta/CoFeB/MgO/capping-layer structure,"
Applied Physics Letters, vol. 113, 172401 (4 pages), October 2018.
DOI:10.1063/1.5050486
-
S. Fukami and H. Ohno,
"Perspective: Spintronic synapse for artificial neural network,"
Journal of Applied Physics, vol. 124, 151904 (8 pages), October 2018.
DOI:10.1063/1.5042317
-
W. A. Borders, S. Fukami, and H. Ohno,
"Characterization of spin-orbit torque-controlled synapse device for artificial neural network applications,"
Japanese Journal of Applied Physics, vol. 57, 1002B2 (5 pages), September 2018.
DOI:10.7567/JJAP.57.1002B2
-
M. Pohlit, S. Rosler, Y. Ohno, H. Ohno, S. Molnar, Z. Fisk, J. Muller, and S. Wirth,
"Evidence for Ferromagnetic Clusters in the Colossal-Magnetoresistance Material EuB6,"
Physical Review Letters, vol. 120, 257201 (5 pages), June 2018.
DOI:10.1103/PhysRevLett.120.257201
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N. Ichikawa, T. Dohi, A. Okada, H. Sato, S. Fukami, and H. Ohno,
"Non-linear variation of domain period under electric field in demagnetized CoFeB/MgO stacks with perpendicular easy axis,"
Applied Physics Letters, vol. 112, 202402 (5 pages), May 2018.
DOI:10.1063/1.5035487
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Y. Takeuchi, C. Zhang, A. Okada, H. Sato, S. Fukami, and H. Ohno,
"Spin-orbit torques in high-resistivity-W/CoFeB/MgO,"
Applied Physics Letters, vol. 112, 192408 (5 pages), April 2018.
DOI:10.1063/1.5027855
-
A. Okada, S. Kanai, S. Fukami, H. Sato, and H. Ohno,
"Electric-field effect on the easy cone angle of the easy-cone state in CoFeB/MgO investigated by ferromagnetic resonance,"
Applied Physics Letters, vol. 111, 172402 (5 pages), April 2018.
DOI:10.1063/1.5026418
-
E. C. I. Enobio, M. Bersweiler, H. Sato, S. Fukami, and H. Ohno,
"Evaluation of energy barrier of CoFeB/MgO magnetic tunnel junctions with perpendicular easy axis using retention time measurement,"
Japanese Journal of Applied Physics, vol. 57, 04FN08 (4 pages), March 2018.
DOI:10.7567/JJAP.57.04FN08
-
M. Shinozaki, J. Igarashi, H. Sato, and H. Ohno,
"Free-layer size dependence of anisotropy field in nanoscale CoFeB/MgO magnetic tunnel junctions,"
Applied Physics Express, vol. 11, 043001 (4 pages), March 2018.
DOI:10.7567/APEX.11.043001
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J. elezný, P. Wadley, K. Olejnik, A. Hoffmann, and H. Ohno,
"Spin transport and spin torque in antiferromagnetic devices,"
Nature Physics, vol. 14, 220-228 (9 pages), March 2018.
DOI:10.1038/s41567-018-0062-7
-
C. Zhang, S. Fukami, S. DuttaGupta, H. Sato, and H. Ohno,
"Time and spatial evolution of spin-orbit torque-induced magnetization switching in W/CoFeB/MgO structures with various sizes,"
Japanese Journal of Applied Physics, vol. 57, 04FN02 (5 pages), February 2018.
DOI:10.7567/JJAP.57.04FN02
-
K. Watanabe, B. Jinnai, S. Fukami, H. Sato, and H. Ohno,
"Shape anisotropy revisited in single-digit nanometer magnetic tunnel junctions,"
Nature Communications, vol. 9, 663 (6 pages), February 2018.
DOI:10.1038/s41467-018-03003-7
-
S. Gupta, S. Kanai, F. Matsukura, and H. Ohno,
"Temperature dependence of ferromagnetic resonance spectra of permalloy on (Bi1-xSbx)2Te3,"
Japanese Journal of Applied Physics, vol. 57, 020302 (4 pages), January 2018.
DOI:10.7567/JJAP.57.020302
2017
-
S. Bhatti, R. Sabiaa, A. Hirohota, H. Ohno, S. Fukami, and S.N. Piramanayagam,
"Spintronics based random access memory: a review,"
Material Today, vol. 20, 9 (19 pages), November 2017.
DOI:10.1016/j.mattod.2017.07.007
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H. Honjo, S. Ikeda, H. Sato, K. Nishioka, T. Watanabe, S. Miura, T. Nasuno, Y. Noguchi, M. Yasuhira, T. Tanigawa, H. Koike, H. Inoue, M. Muraguchi, M. Niwa, H. Ohno, and T. Endoh,
"Impact of Tungsten Sputtering Condition on Magnetic and Transport Properties of Double-MgO Magnetic Tunneling Junction With CoFeB/W/CoFeB Free Layer,"
IEEE Transactions on Magnetics, vol. 53, 2501604 (4 pages), November 2017.
DOI:10.1109/TMAG.2017.2701838
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S. DuttaGupta, T. Kanemura, C. Zhang, A. Kurenkov, S. Fukami, and H. Ohno,
"Spin-orbit torques and Dzyaloshinskii-Moriya interaction in PtMn/[Co/Ni] heterostructures,"
Applied Physics Letters, vol. 111, 182412 (5 pages), November 2017.
DOI:10.1063/1.5005593
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W. A. Borders, S. Fukami, and H. Ohno,
"Stack Structure Dependence of Magnetic Properties of PtMn/[Co/Ni] Films for Spin-Orbit Torque Switching Device,"
IEEE Transactions on Magnetics, vol. 53, 6000804 (4 pages), October 2017.
DOI:10.1109/TMAG.2017.2703817
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M. Bersweiler, H. Sato, and H. Ohno,
"Magnetic and Free-Layer Properties of MgO/(Co)FeB/MgO Structures: Dependence on CoFeB Composition,"
IEEE Magnetics Letters, vol. 8, 3109003 (3 pages), October 2017.
DOI:10.1109/LMAG.2017.2748929
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J. Igarashi, J. Llandro, H. Sato, F. Matsukura, and H. Ohno,
"Magnetic-field-angle dependence of coercivity in CoFeB/MgO magnetic tunnel junctions with perpendicular easy axis,"
Applied Physics Letters, vol. 111, 132407 (4 pages), September 2017.
DOI:10.1063/1.5004968
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B. Jinnai, C. Zhang, A. Kurenkov, M. Bersweiler, H. Sato, S. Fukami, and H. Ohno,
"Spin-orbit torque induced magnetization switching in Co/Pt multilayers,"
Applied Physics Letters, vol. 111, 102402 (3 pages), September 2017.
DOI:10.1063/1.5001171
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S. Gupta, S. Kanai, F. Matsukura, and H. Ohno,
"Magnetic and transport properties of Sb2Te3 doped with high concentration of Cr,"
Applied Physics Express, vol. 10, 103001 (3 pages), September 2017.
DOI:10.7567/APEX.10.103001
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T. Dohi, S. Kanai, F. Matsukura, and H. Ohno,
"Electric-field effect on spin-wave resonance in a nanoscale CoFeB/MgO magnetic tunnel junction,"
Applied Physics Letters, vol. 111, 027403 (3 pages), August 2017.
DOI:10.1063/1.4999312
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H. Sato, S. Ikeda, and H. Ohno,
"Magnetic tunnel junctions with perpendicular easy axis at junction diameter of less than 20nm,"
Japanese Journal of Applied Physics, vol. 56, 0802A6 (9 pages), July 2017.
DOI:10.7567/JJAP.56.0802A6
-
M. Bersweiler, K. Watanabe, H. Sato, F. Matsukura, and H. Ohno,
"Magnetic properties of FeV/MgO-based structures,"
Applied Physics Express, vol. 10, 083001 (3 pages), July 2017.
DOI:10.7567/APEX.10.083001
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S. Kanai, F. Matsukura, and H. Ohno,
"Electric-field-induced magnetization switching in CoFeB/MgO magnetic tunnel junctions,"
Japanese Journal of Applied Physics, vol. 58, 0802A3 (7 pages), June 2017.
DOI:10.7567/JJAP.56.0802A3
-
S. Fukami, and H. Ohno,
"Magnetization switching schemes for nanoscale three-terminal spintronics devices,"
Japanese Journal of Applied Physics, vol. 56, 0802A1 (12 pages), June2017.
DOI:10.7567/JJAP.56.0802A1
-
K. Watanabe, S. Fukami, H. Sato, S. Ikeda, F. Matsukura, and H. Ohno,
"Annealing temperature dependence of magnetic properties of CoFeB/MgO stacks on different buffer layers,"
Japanese Journal of Applied Physics, vol. 56, 0802B2 (4 pages), June 2017.
DOI:10.7567/JJAP.56.0802B2
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J. J. Bean, M. Saito, S. Fukami, H. Sato, S. Ikeda, H. Ohno, Y. Ikuhara, and K. P. McKenna,
"Atomic structure and electronic properties of MgO grain boundaries in tunnelling magnetoresistive devices,"
Scientific Reports, vol. 7, 45594 (9 pages), April 2017.
DOI:10.1038/srep45594
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A. Okada, S. He, B. Gu, S. Kanai, A. Soumyanarayanan, S. T. Lim, M. Tran, M. Mori, S. Maekawa, F. Matsukura, H. Ohno, and C. Panagopoulos,
"Magnetization dynamics and its scattering mechanism in thin CoFeB films with interfacial anisotropy,"
Proceedings of the National Academy of Sciences of the United States of America, vol. 114, 3815 (6 pages), March 2017.
DOI:10.1073/pnas.1613864114
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A. Kurenkov, C. Zhang, S. DuttaGupta, S. Fukami, and H. Ohno,
"Device-size dependence of field-free spin-orbit torque induced magnetization switching in antiferromagnet/ferromagnet structures,"
Applied Physics Letters, vol. 110, 092410 (5 pages), March 2017.
DOI:10.1063/1.4977838
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D. Suzuki, M. Natsui, S. Ikeda, T. Endoh, H. Ohno. and T. Hanyu,
"Design of a variation-resilient single-ended non-volatile six-input lookup table circuit with a redundant-magnetic tunnel junction-based active load for smart Internet-of-things applications,"
ELECTRONICS LETTERS, vol. 53, 456 (2 pages), March 2017.
DOI:10.1049/el.2016.4233
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M. Natsui, A. Tamakoshi, T. Endoh, H. Ohno, and T. Hanyu,
"A spin transfer torque magnetoresistance random access memory-based high-density and ultralowpower associative memory for fully data-adaptive nearest neighbor search with current-mode similarity evaluation and time-domain minimum searching,"
Japanese Journal of Applied Physics, vol. 56, 04CN08 (9 pages), March 2017.
https://iopscience.iop.org/article/10.7567/JJAP.56.04CN01
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N. Ohshima, H. Sato, S. Kanai, J. Llandro, S. Fukami, F. Matsukura, and H. Ohno,
"Current-induced magnetization switching in a nano-scale CoFeB-MgO magnetic tunnel junction under in-plane magnetic field
,"
AIP Advances, vol. 7, 055927 (5 pages), February 2017.
DOI:10.1063/1.4977224
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S. Gupta, S. Kanai, F. Matsukura, and H. Ohno,
"Ferromagnetic resonance spectra of Py deposited on (Bi1-xSbx)2Te3,"
AIP Advances, vol. 7, 055919 (4 pages), January 2017.
DOI:10.1063/1.4974891
-
S. DuttaGupta, S. Fukami, B. Kuerbanjiang, H. Sato, F. Matsukura, V. K. Lazarov, and H. Ohno,
"Magnetic domain-wall creep driven by field and current in Ta/CoFeB/MgO,"
AIP Advances, vol. 7, 055918 (7 pages), January 2017.
DOI:10.1063/1.4974889
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W A. Borders, H. Akima, S. Fukami, S, Moriya, S. Kurihara, Y. Horio, S. Sato, and H. Ohno,
"Analogue spin.orbit torque device for artificial-neural-network-based associative memory operation,"
Applied Physics Express, vol. 10, 013007 (4 pages), January 2017.
DOI:10.7567/APEX.10.013007
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M. Shinozaki, E. Hirayama, S. Kanai, H. Sato, F. Matsukura, H. Ohno,
"Damping constant in a free layer in nanoscale CoFeB/MgO magnetic tunnel junctions investigated by homodyne-detected ferromagnetic resonance,"
Applied Physics Express, vol. 10, 013001 (3 pages), January 2017.
DOI:10.7567/APEX.10.013001
2016
-
C. Zhang, S. Fukami, K. Watanabe, A. Ohkawara, S. DuttaGupta, H. Sato, F. Matsukura, and H. Ohno,
"Critical role of W deposition condition on spin-orbit torque induced
magnetization switching in nanoscale W/CoFeB/MgO,"
Applied Physics Letters, vol. 109, 192405 (5 pages), November 2016.
DOI:10.1063/1.4967475
-
T. Hanyu, T. Endoh, D. Suzuki, H. Koike, Y. Ma, N. Onizawa, M. Natsui, S. Ikeda, and H. Ohno,
"Standby-Power-Free Integrated Circuits Using MTJ-Based VLSI Computing,"
Proceedings of the IEEE, vol. 104, 10 (20 pages), March 2016.
DOI:10.1109/JPROC.2016.2574939
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H. Mazraati, T. Q. Le, A. A. Awad, S. Chung, E. Hirayama, S. Ikeda, F. Matsukura, H. Ohno, and J. Akerman,
"Free- and reference-layer magnetization modes versus in-plane magnetic field in a magnetic tunnel
junction with perpendicular magnetic easy axis,"
Physical Review B, vol. 94, 104428 (6 pages), September 2016.
DOI:10.1103/PhysRevB.94.104428
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Y. Hibino, T. Koyama, A. Obinata, T. Hirai, S. Ota, K. Miwa, S. Ono, F. Matsukura, H. Ohno, and D. Chiba,
"Peculiar temperature dependence of electric-field effect on magnetic anisotropy in
Co/Pd/MgO system,"
Applied Physics Letters, vol. 108, 082403 (4 pages), August 2016.
DOI:10.1063/1.4961621
-
E. Hirayama, H. Sato, S. Kanai, F. Matsukura, and H. Ohno,
"Magnetization Reversal by Field and Current Pulses in Elliptic CoFeB/MgO Tunnel Junctions With Perpendicular Easy Axis,"
IEEE Magnetics Letters, vol. 7, 3104004 (4 pages), July 2016.
DOI:10.1109/LMAG.2016.2568163
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T. Dohi, S. Kanai, A. Okada, F. Matsukura, and H. Ohno,
"Effect of electric-field modulation of magnetic parameters on domain structure in MgO/CoFeB,"
AIP Advances, vol. 6, 075017 (4 pages), July 2016.
DOI:10.1063/1.4959905
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S. Ishikawa, Eli. C. I. Enobio, H. Sato, S. Fukami, F. Matsukura, and H. Ohno,
"Current-Induced Magnetization Switching of CoFeB/Ta/[Co/Pd (Pt)]-Multilayers in Magnetic
Tunnel Junctions With Perpendicular Anisotropy,"
IEEE Transactions on Magnetics, vol. 52, 3400704 (4 pages), July 2016.
DOI:10.1109/TMAG.2016.2517098
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H. Honjo, S. Ikeda, H. Sato, S. Sato, T. Watanabe, S. Miura, T. Nasuno,
Y. Noguchi, M. Yasuhira, T. Tanigawa, H. Koike, M. Muraguchi,
M. Niwa, K. Ito, H. Ohno, and T. Endoh,
"Improvement of Thermal Tolerance of CoFeB/MgO
Perpendicular-Anisotropy Magnetic Tunnel Junctions
by Controlling Boron Composition,"
IEEE Transactions on Magnetics, vol. 52, 3401104 (4 pages), July 2016.
DOI:10.1109/TMAG.2016.2518203
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K. Watanabe, S. Fukami, H. Sato, F. Matsukura, and H. Ohno,
"Magnetic Properties of CoFeB.MgO Stacks With Different
Buffer-Layer Materials (Ta or Mo),"
IEEE Transactions on Magnetics, vol. 52, 3400904 (4 pages), July 2016.
DOI:10.1109/TMAG.2016.2514525
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T. Endoh, H. Koike, S. Ikeda, T. Hanyu, and H. Ohno,
"An Overview of Nonvolatile Emerging Memories -Spintronics for Working Memories,"
IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS, vol. 6, 109 (11 pages), June 2016.
DOI: 10.1109/JETCAS.2016.2547704
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S. Souma, L. Chen, R. O. dowski, T. Sato, F. Matsukura, T. Dietl, H. Ohno, and T. Takahashi,
"Fermi level position, Coulomb gap, and Dresselhaus splitting in (Ga,Mn)As,"
Scientific Reports, vol. 6, 27266 (10 pages), June 2016.
DOI:10.1038/srep27266
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S. Kanai, F. Matsukura, and H. Ohno,
"Electric-field-induced magnetization switching in CoFeB/MgO magnetic tunnel junctions with high junction resistance,"
Applied Physics Letters, vol. 108, 192406 (4 pages), May 2016.
DOI:10.1063/1.4948763
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S. Sato, H. Honjo, S. Ikeda, H. Ohno, T. Endoh, and M. Niwa,
"Study on initial current leakage spots in CoFeB-capped MgO tunnel barrier by conductive atomic force microscopy,"
Japanese Journal of Applied Physics, vol. 55, 04EE05 (7 pages), March 2016.
DOI:10.7567/JJAP.55.04EE05
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T. Endoh, H. Koike, S. Ikeda, T. Hanyu, and H. Ohno,
"A 600-μW ultra-low-power associative processor for image pattern recognition employing magnetic tunnel junction-based nonvolatile memories with autonomic intelligent power-gating scheme,"
Japanese Journal of Applied Physics, vol. 55, 04EF15 (11 pages), March 2016.
DOI:10.7567/JJAP.55.04EF15
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Y. Nakatani, M. Hayashi, S. Kanai, S. Fukami, and H. Ohno,
"Electric field control of Skyrmions in magnetic nanodisks,"
Applied Physics Letters, vol. 108, 152403 (6 pages), March 2016.
DOI:10.1063/1.4945738
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S. Miyakozawa, L. Chen, F. Matsukura, and H. Ohno,
"Temperature dependence of in-plane magnetic anisotropy and anisotropic magnetoresistance in (Ga,Mn)As codoped with Li,"
Applied Physics Letters, vol. 108, 112404 (3 pages), March 2016.
DOI:10.1063/1.4944328
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Z. Wang, M. Saito, K. P. McKenna, S. Fukami, H. Sato, S. Ikeda, H. Ohno, and Y. Ikuhara,
"Atomic-Scale Structure and Local Chemistry of CoFeB/MgO Magnetic Tunnel Junctions,"
Nano Letters, vol. 3, pp. 1530-1536, March 2016.
DOI:10.1021/acs.nanolett.5b03627
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S. Fukami, T. Anekawa, C. Zhang, and H. Ohno,
"A spin-orbit torque switching scheme with collinear magnetic easy axis and current configuration,"
Nature Nanotechnology, pp. 621-625, March 2016.
DOI:10.1038/nnano.2016.29
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S. Fukami, T. Iwabuchi, H. Sato, and H. Ohno,
"Current-induced domain wall motion in magnetic nanowires with various widths down to less than 20 nm,"
Japanese Journal of Applied Physics, vol. 54, 04EN01 (4 pages), February 2016.
DOI:10.7567/JJAP.55.04EN01
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S. Fukami, C. Zhang, S. DuttaGupta, A. Kurenkov, H. Ohno,
"Magnetization switching by spin-orbit torque in an antiferromagnet-ferromagnet bilayer system,"
Nature Materials, vol. 15, pp. 535-541, February 2016.
DOI:10.1038/nmat4566
2015
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S. DuttaGupta, S. Fukami, C. Zhang, H. Sato, M. Yamanouchi, F. Matsukura,
and H. Ohno,
"Adiabatic spin-transfer-torque-induced domain wall creep in a magnetic metal,"
Nature Physics, vol. 12 , 3593 (5 pages), December 2015.
DOI:10.1038/nphys3593
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Y. Takeuchi, H. Sato, S. Fukami, F. Matsukura, and H. Ohno,
"Temperature dependence of energy barrier in CoFeB-MgO magnetic tunnel junctions with perpendicular easy axis,"
Applied Physics Letters, vol. 107, 152405 (3 pages), October 2015.
DOI:10.1063/1.4933256
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Eli. C. I. Enobio, H. Sato, S. Fukami, F. Matsukura, and H. Ohno,
"CoFeB Thickness Dependence of Damping Constants for Single and Double CoFeB-MgO Interface Structures,"
IEEE Magnetics Letters, vol. 6, 5700303 (3 pages), September 2015.
DOI:10.1109/LMAG.2015.2475718
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E. Hirayama, S. Kanai, J. Ohe, H. Sato, F. Matsukura, and H. Ohno,
"Electric-field induced nonlinear ferromagnetic resonance in a CoFeB/MgO magnetic tunnel junction,"
Applied Physics Letters, vol. 107, 132404 (4 pages), September 2015.
DOI:10.1063/1.4932092
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F. Matsukura and H. Ohno,
"Temperature dependence of lattice parameter of (Ga,Mn)As on GaAs substrate,"
Japanese Journal of Applied Physics, vol. 54, 098003 (2 pages), August 2015.
DOI:10.7567/JJAP.54.098003
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L. Chen, F. Matsukura, and H. Ohno,
"Electric-Field Modulation of Damping Constant in a Ferromagnetic Semiconductor (Ga,Mn)As,"
Physical Review Letters, vol. 115, 057204 (5 pages), July 2015.
DOI:10.1103/PhysRevLett.115.057204
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S. D'Ambrosio, L. Chen, H. Nakayama, F. Matsukura, T. Dietl, and H. Ohno,
"Ferromagnetic resonance of Py deposited on ZnO grown by molecular beam epitaxy,"
Japanese Journal of Applied Physics, vol. 54, 093001 (4 pages), July 2015.
DOI:10.7567/JJAP.54.093001
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C. Zhang, S. Fukami, H. Sato, F. Matsukura, and H. Ohno,
"Spin-orbit torque induced magnetization switching in nano-scale Ta/CoFeB/MgO,"
Applied Physics Letters, vol. 107, 012401 (4 pages), July 2015.
DOI:10.1063/1.4926371
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S. Fukami, J. Ieda, and H. Ohno,
"Thermal stability of a magnetic domain wall in nanowires,"
Physical Review B, vol. 91, 235401 (7 pages), June 2015.
DOI:10.1103/PhysRevB.91.235401
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H. Nakayama, L. Chen, H.W. Chang, H. Ohno, and F. Matsukura,
"Inverse spin Hall effect in Pt/(Ga,Mn)As,"
Applied Physics Letters, vol. 106, 222405 (4 pages), June 2015.
DOI:10.1063/1.4922197
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F. Matsukura, Y. Tokura and H. Ohno,
"Control of magnetism by electric fields,"
Nature Nanotechnology, vol. 10, 209 (12 pages), March 2015.
DOI:10.1038/nnano.2015.22
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K. Watanabe, S. Ishikawa, H. Sato, S. Ikeda, M. Yamanouchi, S. Fukami, F. Matsukura, and H. Ohno,
"Dependence of magnetic properties of MgO/CoFeB/Ta stacks on CoFeB and Ta thicknesses,"
Japanese Journal of Applied Physics, vol. 54, 04EM04 (3 pages), March 2015.
DOI:10.7567/JJAP.54.04DM04
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E. Hirayama, S. Kanai, K. Sato, M. Yamanouchi, H. Sato, S. Ikeda,
F. Matsukura, and H. Ohno,
"In-plane anisotropy of a nano-scaled magnetic tunnel junction with perpendicular magnetic easy axis,"
Japanese Journal of Applied Physics, vol. 54, 04EM03 (3 pages), February 2015.
DOI:10.7567/JJAP.54.04DM03
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E. Hirayama, S. Kanai, H. Sato, F. Matsukura, and H. Ohno,
"Ferromagnetic resonance in nanoscale CoFeB/MgO magnetic tunnel junctions,"
Journal of Applied Physics, vol. 117, 17B708 (4 pages), February 2015.
DOI:10.1063/1.4908149
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S. Kanai, F. Matsukura, S. Ikeda, AAPPS H. Sato, S. Fukami, and H. Ohno,
"Spintronics: from Basic Research to VLSI Application,"
AAPPS Bulletin, vol. 25, pp. 4-11, February 2015.
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R. Hiramatsu, K. -J. Kim, T. Taniguchi, T. Tono, T. Moriyama, S. Fukami, M. Yamanouchi, H. Ohno, Y. Nakatani, and T. Ono,
"Localized precessional mode of domain wall controlled by magnetic field and dc current,"
Applied Physics Express, vol. 8, 023003 (4 pages), January 2015.
DOI:10.7567/APEX.8.023003
2014
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H. Jarollahi, N. Onizawa, V. Gripon, N. Sakimura, T. Sugibayashi, T. Endoh, H. Ohno, T. Hanyu, and W. J. Gross,
"A Nonvolatile Associative Memory-Based Context-Driven Search Engine Using 90 nm CMOS/MTJ-Hybrid Logic-in-Memory Architecture,"
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, vol. 4, pp. 460-474, December 2014.
DOI:10.1109/JETCAS.2014.2361061
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S. Kanai, M. Gajek, D. C. Worledge, F. Matsukura,
and H. Ohno,
"Electric field-induced ferromagnetic resonance in a CoFeB/MgO magnetic tunnel junction under dc bias voltages,"
Applied Physics Letters, vol. 105, 242409 (4 pages), December 2014.
DOI:10.1063/1.4904956
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S. Kanai, M. Tsujikawa, Y. Miura, M. Shirai, F. Matsukura, and H. Ohno,
"Magnetic anisotropy in Ta/CoFeB/MgO investigated by x-ray magnetic circular dichroism and first-principles calculation,"
Applied Physics Letters, vol. 105, 222409 (4 pages), December 2014.
DOI:10.1063/1.4903296
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H. Honjo, S. Fukami, K. Ishihara, K. Kinoshita, Y. Tsuji, A. Morioka,
R. Nebashi, K. Tokutome, N. Sakimura, M. Murahata, S. Miura,
T. Sugibayashi, N. Kasai, and H. Ohno,
"Material Stack Design With High Tolerance to Process-Induced Damage in Domain Wall Motion Device,"
IEEE Transactions on Magnetics, vol. 50, 1401904 (4 pages), November 2014.
DOI:10.1109/TMAG.2014.2325019
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S. Fukami, M. Yamanouchi, S. Ikeda, and H. Ohno,
"Domain Wall Motion Device for Nonvolatile Memory and Logic - Size Dependence of Device Properties,"
IEEE Transactions on Magnetics, vol. 50, 3401006 (6 pages), November 2014.
DOI:10.1109/TMAG.2014.2321396
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K. Kinoshita, H. Honjo, S. Fukami, H. Sato, K. Mizunuma, K. Tokutome,
M. Murahata, S. Ikeda, S. Miura, N. Kasai, and H. Ohno,
"Process-induced damage and its recovery for a CoFeB/MgO magnetic tunnel junction
with perpendicular magnetic easy axis,"
Japanese Journal of Applied Physics, vol. 53, 103001 (6 pages), September 2014.
DOI:10.7567/JJAP.53.103001
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J. Torrejon, J. Kim, J. Sinha, S. Mitani, M. Hayashi, M. Yamanouchi, H. Ohno,
"Interface control of the magnetic chirality in CoFeB/MgO heterostructures with heavy-metal underlayers,"
Nature Communications, vol. 5, 4655 (8 pages), August 2014.
DOI:10.1038/ncomms5655
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H. Sato, E.C.I. Enobio, M. Yamanouchi, S. Ikeda, S. Fukami, S. Kanai, F. Matsukura, and H. Ohno,
"Properties of magnetic tunnel junctions with a MgO/CoFeB/Ta/CoFeB/MgO recording structure down to junction diameter of 11nm,"
Applied Physics Letters, vol. 105, 062403 (4 pages), August 2014.
DOI:10.1063/1.4892924
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A. Okada, S. Kanai, M. Yamanouchi, S. Ikeda, F. Matsukura, and H. Ohno,
"Electric-field effects on magnetic anisotropy and damping constant in Ta/CoFeB/MgO investigated by ferromagnetic resonance,"
Applied Physics Letters, vol. 105, 052415 (4 pages), August 2014.
DOI:10.1063/1.4892824
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H. W. Chang, S. Akita, F. Matsukura, and H. Ohno,
"Electric-field effects on magnetic properties of molecular beam epitaxially grown thin (Ga,Mn)Sb layers,"
Journal of Crystal Growth, vol. 401, pp. 633-635, July 2014.
DOI:10.1016/j.jcrysgro.2013.11.041
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S. Miyakozawa, L. Chen, F. Matsukura, and H. Ohno,
"Properties of (Ga,Mn)As codoped with Li,"
Applied Physics Letters, vol. 104, 222408 (4 pages), June 2014.
DOI:10.1063/1.4881636
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S. Kanai, Y. Nakatani, M. Yamanouchi, S. Ikeda, H. Sato, F. Matsukura, and H. Ohno,
"Magnetization switching in a CoFeB/MgO magnetic tunnel junction by combining spin transfer
torque and electric field-effect,"
Applied Physics Letters, vol. 104, 212406 (3 pages), May 2014.
DOI:10.1063/1.4880720
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Kim, J. Sinha, S. Mitani, M. Hayashi, S. Takahashi,
S. Maekawa, M. Yamanouchi, and H. Ohno, "Anomalous
temperature dependence of current-induced torques in CoFeB/MgO heterostructures
with Ta-based underlayers," Physical Review B, vol. 89, 174424 (8 pages),
May 2014. DOI:10.1103/PhysRevB.89.174424PRB
- M.
Hayashi, J. Kim, M. Yamanouchi, and H. Ohno, "Quantitative
characterization of the spin-orbit torque using harmonic Hall voltage
measurements," Physical Review B, vol. 89, 144425 (15 pages), May 2014. DOI:10.1103/PhysRevB.89.144425
- H.
Sato, M. Yamanouchi, S. Ikeda, S. Fukami, F. Matsukura, and H. Ohno,
"MgO/CoFeB/Ta/CoFeB/MgO recording structure with low intrinsic critical
current and high thermal stability," Journal of the Magnetics Society of
Japan, vol. 38, pp. 56-60, May 2014. DOI:10.3379/msjmag.1403R002
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Yoshimura, T. Koyama, D. Chiba, Y. Nakatani, S. Fukami,
M. Yamanouchi, H. Ohno, K.-J. Kim, T. Moriyama, and T. Ono, "Effect of spin Hall torque on current-induced precessional domain
wall motion," Applied Physics Express, vol. 7, 033005 (4 pages), May 2014.
DOI:10.7567/APEX.7.033005
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Kobayashi, Y. Kakehashi, K. Hirose, S. Onoda, T. Makino,
T. Ohshima, S. Ikeda, M. Yamanouchi, H. Sato, Eli I. C. Enobio, T. Endoh, and H. Ohno, "Influence of Heavy Ion Irradiation on
Perpendicular-Anisotropy CoFeB-MgO Magnetic Tunnel Junctions," IEEE
Transactions on Nuclear Science, pp. 1710-1716, April 2014. DOI:10.1109/TNS.2014.2304738
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K. Kinoshita, H. Honjo, S. Fukami, R. Nebashi, K. Tokutome, M. Murahata, S. Miura, N. Kasai, Ikeda, and H. Ohno,
"Plasma process induced physical damages on multilayered magnetic films for magnetic domain wall motion,"
Japanese Journal of Applied Physics, vol. 53, 03DF03 (6 pages), March 2014.
DOI:10.7567/JJAP.53.03DF03
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Dietl and H. Ohno, "Dilute ferromagnetic semiconductors: Physics and
spintronic structures," Reviews of Modern Physics, vol. 86, 187 (65
pages), March 2014. DOI:10.1103/RevModPhys.86.187
- M.
Ono, J. Ishihara, G. Sato, S. Matsuzaka, Y. Ohno, and H. Ohno, "Strain and
origin of inhomogeneous broadening probed by optically detected nuclear
magnetic resonance in a (110) GaAs quantum well," Physical Review B, vol.
89, 115308 (4 pages), March 2014. DOI:10.1103/PhysRevB.89.115308
- J.
Ishihara, Y. Ohno, and H. Ohno, "Direct mapping of photoexcited local
spins in a modulation-doped GaAs/AlGaAs wires," Japanese Journal of Applied
Physics, vol. 53, 04EM04 (3 pages), March 2014. DOI:10.7567/JJAP.53.04EM04
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N. Sakimura, Y. Tsuji, R. Nebashi, H. Honjo, A. Morioka,
K. Ishihara, K. Kinoshita, S. Fukami, S. Miura, N.
Kasai, T. Endoh, H. Ohno, T. Hanyu, T. Sugibayashi, "A 90nm
20MHz Fully Nonvolatile Microcontroller for Standby-Power-Critical
Applications," 2014 IEEE International Solid-State Circuits Conference,
vol. 10.5, 184 (3 pages), February. 2014. DOI:10.1109/ISSCC.2014.6757392
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Fukami, M. Yamanouchi, Y. Nakatani, K.-J. Kim, T. Koyama, D. Chiba, S. Ikeda,
N. Kasai, T. Ono, and H. Ohno, "Distribution of critical current density
for magnetic domain wall motion," Journal of Applied Physics, vol. 115,
17D508 (3 pages), February 2014. DOI:10.1063/1.4866394
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Ishikawa, H. Sato, M. Yamanouchi, S. Ikeda, S. Fukami, F. Matsukura, and H.
Ohno, "Co/Pt multilayer-based magnetic tunnel junctions with a CoFeB/Ta
insertion layer," Journal of Applied Physics, vol. 115, 17C719 (3 pages),
February 2014. DOI:10.1063/1.4862724
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Sato, S. Ikeda, S. Fukami, H. Honjo, S. Ishikawa, M. Yamanouchi, K. Mizunuma, F. Matsukura, and H. Ohno, "Co/Pt
multilayer based reference layers in magnetic tunnel junctions for nonvolatile
spintronics VLSIs," Japanese Journal of Applied Physics, vol. 53, 04EM02 (3
pages), February 2014. DOI:10.7567/JJAP.53.04EM02
- C.
Zhang, M. Yamanouchi, H. Sato, S. Fukami, S. Ikeda, F. Matsukura and H. Ohno,
"Magnetization reversal induced by in-plane current in Ta/CoFeB/MgO
structures with perpendicular magnetic easy axis," Journal of Applied Physics,
vol. 115, 17C714 (3 pages), January 2014. DOI:10.1063/1.4863260
- L.
Chen, S. Ikeda, F. Matsukura, and H. Ohno, "DC voltages in Py
and Py/Pt under ferromagnetic resonance," Applied Physics Express, vol. 7,
013002 (4 pages), January 2014. DOI:10.7567/APEX.7.013002
- J.
Ishihara, Y. Ohno, and H. Ohno, "Direct imaging of gate-controlled
persistent spin helix state in a modulation-doped GaAs/AlGaAs quantum
well," Applied Physics Express, vol. 7, 013001 (4 pages), January 2014. DOI:10.7567/APEX.7.013001
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Kanai, M. Yamanouchi, S. Ikeda, Y. Nakatani, F. Matsukura, and H. Ohno, "Electric Field-Induced Magnetization Switching
in CoFeB-MgO-Static Magnetic Field Angle Dependence," IEEE Transactions on
Magnetics, vol. 50, 4200103 (3 pages), January 2014. DOI:10.1109/TMAG.2013.2278559
2013
- S.
Fukami, M. Yamanouchi, K.-J. Kim, T. Suzuki, N. Sakimura, D. Chiba, S. Ikeda,
T. Sugibayashi, N. Kasai, T. Ono, and H. Ohno, "20-nm magnetic domain wall
motion memory with ultralow-power operation," Electron Devices Meeting
(IEDM), pp. 3.2.1-3.2.4, December 2013. DOI:10.1109/IEDM.2013.6724550
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Sato, T. Yamamoto, M. Yamanouchi, S. Ikeda, S. Fukami, K. Kinoshita, F.
Matsukura, N. Kasai, and H. Ohno, "Comprehensive study of CoFeB-MgO
magnetic tunnel junction characteristics with single- and double-interface
scaling down to 1X nm," Electron Devices Meeting (IEDM), pp. 3.2.1-3.2.4, December 2013. DOI:10.1109/IEDM.2013.6724550
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Zhang, M. Yamanouchi, H. Sato, S. Fukami, S. Ikeda, Fumihiro
Matsukura, and H. Ohno, "Magnetotransport measurements of current
induced effective fields in Ta/CoFeB/MgO," Applied Physics Express, vol.
103, 262407 (3 pages), December 2013.
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C. I. Enobio, K. Ohtani, Y. Ohno, and H. Ohno, "Detection
and measurement of electroreflectance on quantum cascade laser device using
Fourier transform infrared microscope," Applied Physics Letters, vol. 103,
231106 (4 pages), December 2013. DOI:10.1063/1.4839421
- M. Kawaguchi, K. Shimamura, S. Fukami, F. Matsukura, H.
Ohno, T. Moriyama, D. Chiba, and T. Ono, "Current-Induced
Effective Fields Detected by Magnetotrasport Measurements," Applied
Physics Express, vol. 6, 113002 (4 pages), October 2013. DOI:10.7567/APEX.6.113002
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Chiba, T. Ono, F. Matsukura, and H. Ohno, "Electric field control of
thermal stability and magnetization switching in (Ga,Mn)As," Applied
Physics Letters, vol. 103, 142418 (4 pages), October 2013. DOI:10.1063/1.4821778
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H. W. Chang, S. Akita, F. Matsukura, and H. Ohno, "Hole concentration
dependence of the Curie temperature of (Ga,Mn)Sb in a
field-effect structure," Applied Physics Letters, vol. 103, 142402 (4
pages), September 2013.
DOI:10.1063/1.4823592
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Fukami, M. Yamanouchi, S. Ikeda, and H. Ohno, "Depinning probability of a
magnetic domain wall in nanowires by spin-polarized currents," Nature
Communications, vol. 4, 2293 (6 pages), August 2013. DOI:10.1038/ncomms3293
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S. Kanai, Y. Nakatani, M. Yamanouchi, S. Ikeda, F. Matsukura, H. Ohno,
"In-plane magnetic field dependence of electric field-induced magnetization switching,"
Applied Physics Letters, vol. 103, 072408 (4 pages), August 2013.
DOI:10.1063/1.4818676
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H. Sato, M. Yamanouchi, S. Ikeda, S. Fukami, F. Matsukura, and H. Ohno,
"MgO/CoFeB/Ta/CoFeB/MgO Recording Structure in Magnetic Tunnel Junctions With Perpendicular Easy Axis,"
IEEE Transactions on Magnetics, vol. 49, 4437 (4 pages), July 2013.
DOI:10.1109/TMAG.2013.2251326
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S. Fukami, H. Sato, M. Yamanouchi, S. Ikeda, and H. Ohno,
"CoNi Films with Perpendicular Magnetic Anisotropy Prepared by Alternate Monoatomic Layer Deposition,"
Applied Physics Express, vol. 6, 073010 (3 pages), July 2013.
DOI:10.7567/APEX.6.073010
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L. Chen, F. Matsukura, and H. Ohno,
"Direct-current voltages in (Ga,Mn)As structures induced by ferromagnetic resonance,"
Nature Communications, vol. 4, 3055 (6 pages), June 2013.
DOI:10.1038/ncomms3055
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K.-J. Kim, R. Hiramatsu, T. Koyama, K. Ueda, Y. Yoshimura, D. Chiba,
K. Kobayashi, Y. Nakatani, S. Fukami, M. Yamanouchi, H. Ohno, H. Kohno, G. Tatara, and T. Ono,
"Two-barrier stability that allows low-power operation in current-induced domain-wall motion,"
Nature Communications, vol. 4, 3011 (6 pages), June 2013.
DOI:10.1038/ncomms3011
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J. Sinha, M. Hayashi, A. J. Kellock, S. Fukami, M. Yamanouchi, H. Sato, S. Ikeda, S. Mitani, S.-H. Yang, S. S. P. Parkin, and H. Ohno,
"Enhanced interface perpendicular magnetic anisotropy in Ta|CoFeB|MgO using nitrogen doped Ta underlayers,"
Applied Physics Letters, vol. 102, 242405 (4 pages), June 2013.
DOI:10.1063/1.4811269
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S. Fukami, M. Yamanouchi, H. Honjo, K. Kinoshita, K. Tokutome, S. Miura, S. Ikeda, N. Kasai, and H. Ohno,
"Electrical endurance of Co/Ni wire for magnetic domain wall motion device,"
Applied Physics Letters, vol. 102, 222410 (4 pages), June 2013.
DOI:10.1063/1.4809734
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M. Yamanouchi, L. Chen, J. Kim, M. Hayashi, H. Sato, S. Fukami, S. Ikeda, F. Matsukura, and H. Ohno,
"Three terminal magnetic tunnel junction utilizing the spin Hall effect of iridium-doped copper,"
Applied Physics Letters, vol. 102, 212408 (4 pages), May 2013.
DOI:10.1063/1.4808033
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J. Ishihara, M. Ono, Y. Ohno, and H. Ohno,
"A strong anisotropy of spin dephasing time of quasi-one dimensional electron gas in modulation-doped GaAs/AlGaAs wires,"
Applied Physics Letters, vol. 102, 212402 (4 pages), May 2013.
DOI:10.1063/1.4807171
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K. Mizunuma, M. Yamanouchi, H. Sato, S. Ikeda, S. Kanai, F. Matsukura, and H. Ohno,
" Size Dependence of Magnetic Properties of Nanoscale CoFeB-MgO Magnetic Tunnel Junctions with Perpendicular Magnetic Easy Axis Observed by Ferromagnetic Resonance,"
Applied Physics Express, vol. 6, 063002 (3 pages), May 2013.
DOI:10.7567/APEX.6.063002
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S. Ishikawa, H. Sato, M. Yamanouchi, S. Ikeda, S. Fukami, F. Matsukura, and H. Ohno,
"Magnetic properties of MgO-[Co/Pt] multilayers with a CoFeB insertion layer,"
Journal of Applied Physics, vol. 113, 17C721 (3 pages), April 2013.
DOI:10.1063/1.4798499
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H. Ohno,
"Bridging semiconductor and magnetism,"
Journal of Applied Physics, vol. 113, 136509 (5 pages), March 2013.
DOI:10.1063/1.4795537
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M. Ono, J. Ishihara, G. Sato, Y. Ohno, and H. Ohno,
"Coherent Manipulation of Nuclear Spins in Semiconductors with an Electric Field,"
Applied Physics Express, vol. 6, 033002 (3 pages), February 2013.
DOI:10.7567/APEX.6.033002
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L. R. Fleet, K. Yoshida, H. Kobayashi, Y. Kaneko, S. Matsuzaka, Y. Ohno, H. Ohno, S. Honda, J. Inoue, and A. Hirohata,
"Correlating the interface structure to spin injection in abrupt Fe/GaAs(001) films,"
Physical Review B, vol. 87, 022401 (5 pages), January 2013.
DOI:10.1103/PhysRevB.87.024401
2012
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J. Kim, J. Sinha, M. Hayashi, M. Yamanouchi, S. Fukami, T. Suzuki, S. Mitani and H. Ohno,
"Layer thickness dependence of the current-induced effective field vector in Ta|CoFeB|MgO,"
Nature Materials, vol. 12, pp. 240-245, December 2012.
DOI:10.1038/NMAT3522
-
S. Ikeda, H. Sato, M. Yamanouchi, H. Gan, K. Miura, K. Mizunuma, S. Kanai, S. Fukami, F. Matsukura, N. Kasai and H. Ohno,
"RECENT PROGRESS OF PERPENDICULAR ANISOTROPY MAGNETIC TUNNEL JUNCTIONS FOR NONVOLATILE VLSI,"
SPIN, vol. 2, 1240003 (12 pages), December 2012.
DOI:10.1142/S2010324712400036
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A. A. Greer, A. X. Gray, S. Kanai, A. M. Kaiser, S. Ueda, Y. Yamashita, C. Bordel, G. Palsson, N. Maejima, S.-H. Yang, G. Conti, K. Kobayashi, S. Ikeda, F. Matsukura, H. Ohno, C. M. Schneider, J. B. Kortright, F. Hellman, and C. S. Fadley,
"Observation of boron diffusion in an annealed Ta/CoFeB/MgO magnetic tunnel junction with standing-wave hard x-ray photoemission,"
Applied Physics Letters, vol. 101, 202402 (4 pages), November 2012.
DOI:10.1063/1.4766351
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S. Ikeda, R. Koizumi, H. Sato, M. Yamanouchi, K. Miura, K. Mizunuma, H. Gan, F. Matsukura, and H. Ohno ,
"Boron Composition Dependence of Magnetic Anisotropy and Tunnel Magnetoresistance in MgO/CoFe(B) Based Stack Structures,"
IEEE Transactions on Magnetics, vol. 48, 3829 (4 pages), October 2012.
DOI:10.1109/TMAG.2012.2203588
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S. Kanai, M. Yamanouchi, S. Ikeda, Y. Nakatani, F. Matsukura, and H. Ohno,
"Electric field-induced magnetization reversal in a perpendicular-anisotropy CoFeB-MgO magnetic tunnel junction,"
Applied Physics Letters, vol. 101, 122403 (3 pages), September 2012.
DOI:10.1063/1.4753816
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D. Markó, T. Devolder, K. Miura, K. Ito, Joo-Von Kim, C. Chappert, S. Ikeda, and H. Ohno,
"Material parameters and thermal stability of synthetic ferrimagnet free layers in magnetic tunnel junction nanopillars,"
Journal of Applied Physics, vol. 112, 053922 (4 pages), September 2012.
DOI:10.1063/1.4751025
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P. Das, A. Bajpai, Y. Ohno, H. Ohno, and J. Müller,
"On the influence of nanometer-thin antiferromagnetic surface layer on ferromagnetic CrO2,"
Journal of Applied Physics, vol. 112, 053921 (4 pages), September 2012.
DOI:10.1063/1.4751350
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K. Kinoshita, T. Yamamoto, H. Honjo, N. Kasai, S. Ikeda, and H. Ohno,
"Damage Recovery by Reductive Chemistry after Methanol-Based Plasma Etch to Fabricate Magnetic Tunnel Junctions,"
Japanese Journal of Applied Physics, vol. 51, 08HA01 (6 pages), August 2012.
DOI:10.1143/JJAP.51.08HA01
- H. Sato, M. Yamanouchi, S. Ikeda, S. Fukami, F. Matsukura, and H. Ohno,
"Perpendicular-anisotropy CoFeB-MgO magnetic tunnel junctions with
a MgO/CoFeB/Ta/CoFeB/MgO recording structure," Applied Physics Letters,
vol. 101, 022414 (4 pages), July 2012. DOI:10.1063/1.4736727
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K.-J. Kim, D. Chiba, K. Kobayashi, S. Fukami, M. Yamanouchi, H. Ohno, S.-G. Je, S.-B. Choe, and T. Ono,
"Observation of magnetic domain-wall dynamics transition in Co/Ni
multilayered nanowires,"
Applied Physics Letters, vol. 101, 022407 (4 pages), July 2012.
DOI:10.1063/1.4733667
- S. Fukami, N. Ishiwata, N. Kasai, M. Yamanouchi, H. Sato, S. Ikeda, and H. Ohno, "Scalability Prospect
of Three-Terminal Magnetic Domain-Wall Motion Device," IEEE Transactions
on Magnetics, vol. 48, 7 (6 pages), July 2012. DOI:10.1109/TMAG.2012.2187792
- E. C. I. Enobio, H. Sato, K. Ohtani, Y. Ohno, and H.
Ohno , "Photocurrent Measurements on a Quantum Cascade Laser Device
by Fourier Transform Infrared Microscope," Japanese Journal of Applied
Physics, vol. 51, 06FE15 (3 pages), June 2012. DOI:10.1143/JJAP.51.06FE15
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M. Ghali, K. Ohtani, Y. Ohno, and H. Ohno, "Vertical-Electrical-Field-Induced Control of the Exciton
Fine Structure Splitting in GaAs Island Quantum Dots for the Generation of Polarization-Entangled Photons,"
Japanese Journal of Applied Physics, vol. 51, 06FE14 (3 pages), June 2012. DOI:0.1143/JJAP.51.06FE14
- M. Kawaguchi, K. Shimamura, S. Ono, S. Fukami, F.
Matsukura, H. Ohno, D. Chiba, and T. Ono, "Electric Field Effect on Magnetization of an Fe Ultrathin Film," Applied Physics
Express, vol. 5, 063007 (3 pages), June 2012. DOI:10.1143/APEX.5.063007
- Y. Yoshimura, T. Koyama, D. Chiba, Y. Nakatani, S. Fukami,
M. Yamanouchi, H. Ohno, and Teruo Ono, "Current-Induced Domain Wall Motion in Perpendicularly Magnetized Co/Ni Nanowire
under In-Plane Magnetic Fields," Applied Physics Express, vol. 5, 063001 (3 pages), May 2012. DOI:10.1143/APEX.5.063001
- M. Hayashi, M. Yamanouchi, S. Fukami, J. Sinha,
S. Mitani, and H. Ohno, "Spatial control of magnetic anisotropy
for current induced domain wall injection in perpendicularly magnetized
CoFeB|MgO nanostructures," Applied Physics Letters, vol. 100, 192411
(4 pages), May 2012. DOI:10.1063/1.4711016
- L. Li, Y. Guo, X. Y. Cui, R. Zheng, K. Ohtani, C. Kong, A. V. Ceguerra,
M. P. Moody, J. D. Ye, H. H. Tan, C. Jagadish, Hui Liu, C. Stampfl, H.
Ohno, S. P. Ringer, and F. Matsukura, "Magnetism of Co-doped ZnO epitaxially
grown on a ZnO substrate," Physical Review B, vol. 85, 174430 (8 pages),
May 2012. DOI:10.1103/PhysRevB.85.174430
- A. Brataas, A. D. Kent, and H. Ohno, "Current-induced torques
in magnetic materials," Nature Materials, vol. 11 372 (10 pages), May 2012. DOI:10.1038/nmat3311
- S. V. Karthik, Y. K. Takahashi, T. Ohkubo, K. Hono, H. D. Gan, S. Ikeda,
and H. Ohno, "Transmission electron microscopy study on the effect
of various capping layers on CoFeB/MgO/CoFeB pseudo spin valves annealed
at different temperatures," Journal of Applied Physics, vol. 111,
083922 (7 pages), April 2012. DOI:10.1063/1.4707964
- H. Sato, M. Yamanouchi, K. Miura, S. Ikeda, R. Koizumi, F. Matsukura, and
H. Ohno, "CoFeB Thickness Dependence of Thermal Stability Factor in
CoFeB/MgO Perpendicular Magnetic Tunnel Junctions," IEEE Magnetics
Letters, vol. 3, 3000204 (4 pages), April 2012. DOI:10.1109/LMAG.2012.2190722
- T. Kawahara, K. Ito, R. Takemura, and H. Ohno, "Spin-transfer torque
RAM technology: Review and prospect," Microelectronics Reliability,
vol. 52, pp. 613-627, April 2012. DOI:10.1016/j.microrel.2011.09.028
- D. Suzuki, M. Natsui, T. Endoh, H. Ohno, and T. Hanyu, "Design of a Compact Nonvolatile Four-Input Logic Element Using a Magnetic
Tunnel Junction and Metal-Oxide-Semiconductor Hybrid Structure," Japanese Journal of Applied Physics, vol. 51, 04DM02 (5 pages), April 2012. DOI:10.1143/JJAP.51.04DM02
- H. Yamamoto, J. Hayakawa, K. Miura, K. Ito, H. Matsuoka, S. Ikeda, and
H. Ohno, "Dependence of magnetic anisotropy in Co20Fe60B20 free layers
on capping layers in MgO-based magnetic tunnel junctions with in-plane
easy axis," Applied Physics Express, vol. 5, 053002 (3 pages), April
2012. DOI:10.1143/APEX.5.053002
- S. Matsunaga, A. Katsumata, M. Natsui, T. Endoh,
H. Ohno, and T. Hanyu, "Design of a 270ps-access 7-transistor/2-magnetic-tunnel-junction cell circuit
for a high-speed-search nonvolatile ternary content-addressable memory," Journal of Applied Physics, vol. 111, 07E336 (3 pages), March 2012. DOI:10.1063/1.3677875
- H. Honjo, S. Fukami, R. Nebashi, N. Ishiwata, S. Miura, N. Sakimura, T.
Sugibayashi, N. Kasai and H. Ohno, "Magnetic tunneling junction with
Fe/NiFeB free layer for magnetic logic circuits," Journal of Applied
Physics, vol. 111, 07C709 (4 pages), March 2012. DOI:10.1063/1.3675268
- H. Honjo, S. Fukami, T. Suzuki, R. Nebashi, N. Ishiwata, S. Miura, N. Sakimura,
T. Sugibayashi, N. Kasai and H. Ohno, "Domain-wall-motion cell with
perpendicular anisotropy wire and in-plane magnetic tunneling junctions,"
Journal of Applied Physics, vol. 111, 07C903 (4 pages), February 2012.
DOI:10.1063/1.3671437
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M. Kodzuka, T. Ohkubo, K. Hono, S. Ikeda, H. D. Gan, and H. Ohno, "Effects of boron composition on tunneling magnetoresistance ratio and microstructure of CoFeB/MgO/CoFeB pseudo-spin-valve magnetic tunnel junctions,
" Journal of Applied Physics, vol. 111, 043913 (4 pages), February 2012. DOI:10.1063/1.3688039
- M. Ghali, K. Ohtani, Y. Ohno and H. Ohno, "Generation
and control of polarization-entangled photons from GaAs island quantum
dots by an electric field," Nature Communications, vol. 3, 661 (6
pages), February 2012. DOI:10.1038/ncomms1657
- D. Suzuki, M. Natsui, T. Endoh, H. Ohno, and T. Hanyu, "Six-input lookup table circuit with 62% fewer transistors using nonvolatile
logic-in-memory architecture with series/parallel-connected magnetic
tunnel junctions," Journal of Applied Physics, vol. 111, 07E318 (3 pages), February 2012. DOI:10.1063/1.3672411
- S. Matsunaga, A. Katsumata, M. Natsui, T. Endoh, H. Ohno, and T. Hanyu, "Design of a Nine-Transistor/Two-Magnetic-Tunnel-Junction-Cell-Based
Low-Energy Nonvolatile Ternary Content-Addressable Memory," Japanese
Journal of Applied Physics, vol. 51, 02BM06 (5 pages), February 2012. DOI:10.1143/JJAP.51.02BM06
- F. Iga, Y. Yoshida, S. Ikeda, T. Hanyu, H. Ohno, and T. Endoh, "Time-Resolved Switching Characteristic in Magnetic Tunnel Junction
with Spin Transfer Torque Write Scheme," Japanese Journal of Applied Physics, vol. 51, 02BM02 (5 pages), February 2012. DOI:10.1143/JJAP.51.02BM02
- T. Ohsawa, F. Iga, S. Ikeda, T. Hanyu, H. Ohno, and T. Endoh, "High-Density and Low-Power Nonvolatile Static Random Access Memory
Using Spin-Transfer-Torque Magnetic Tunnel Junction," Japanese Journal of Applied Physics, vol. 51, 02BD01 (6 pages), February 2012. DOI:10.1143/JJAP.51.02BD01
- R. Takemura, T. Kawahara, K. Ono, K. Miura, H. Matsuoka, H. Ohno, "Highly-scalable disruptive reading and restoring scheme for Gb-scale SPRAM
and beyond," Solid-State Electronics, vol. 58, pp. 1-2, January 2011. DOI:10.1109/IMW.2010.5488324
- M. Hayashi, Y. Nakatani, S. Fukami, M. Yamanouchi,
S. Mitani and H. Ohno, "Domain wall dynamics driven by spin
transfer torque and the spin-orbit field," Journal of Physics: Condensed Matter,
vol. 24, 024221 (9 pages), January 2012. DOI: 10.1088/0953-8984/24/2/024221
2011
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H. D. Gan, H. Sato, M. Yamanouchi, S. Ikeda, K. Miura, R. Koizumi, F. Matsukura, and H. Ohno, "Origin of the collapse of tunnel magnetoresistance at high annealing temperature in CoFeB/MgO perpendicular magnetic tunnel junctions,
" Applied Physics Letters, vol. 99, 252507 (4 pages), December 2011. DOI:10.1063/1.3671669
- K. Miura, R. Sugano, M. Ichimura, J. Hayakawa, S. Ikeda,
H. Ohno, and S. Maekawa, "Reduction of intrinsic critical
current density under a magnetic field along the hard axis of a free layer
in a magnetic tunnel junction," Physical Review B, vol. 84, 174434
(5 pages), November 2011. DOI:10.1103/PhysRevB.84.174434
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M. Yamanouchi, A. Jander, P. Dhagat, S. Ikeda, F. Matsukura, and H. Ohno,
"Domain Structure in CoFeB Thin Films With Perpendicular Magnetic Anisotropy,"
IEEE Magnetics Letters, vol. 2, 3000304 (4 pages), July 2011.
DOI:10.1109/LMAG.2011.2159484