Control of the quantum spin entanglement with ferromagnetic nanowindow

• Project/Area Number: 20H02178
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: Tohoku University
• Principal Investigator: Kanai Shun 東北大学, 電気通信研究所, 准教授 (40734546)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000); Fiscal Year 2022: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2021: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000); Fiscal Year 2020: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
• Keywords: スピントロニクス / 量子ビット / 固体中スピン中心 / スピンコヒーレンス / 位相緩和時間 / 磁性体 / 固体中のスピン中心 / 酸化物 / 量子コヒーレンス / 量子エレクトロニクス / ナノ構造 / 色中心 / クラスタ相関展開 / 量子材料探索 / 量子緩和時間 / 疑似量子ビット / 強磁性体

Outline of Research at the Start

もつれ状態の生成と制御は量子情報研究における中心的課題である。本研究では、色中心スピン対の量子ビット応用上の最重要課題である、もつれ状態の制御と検出を、強磁性体構造を用いて実現する。本研究では、近接色中心対を磁性体ナノウィンドウ下に作製し、局所勾配磁場を与えることで各スピンのPauliゲート操作とスピン間SWAP操作を両立、量子化方向の平行な色中心対のもつれ状態の万能ゲート制御を実験実証する。本研究による課題解決により、新規色中心材料におけるもつれ状態の制御の実現、もつれ状態の新規制御手法、大規模色中心スピンのもつれ状態の制御の実現への道を拓く。

Outline of Final Research Achievements

To construct a universal gate set in multiple qubits, it is necessary to achieve both (1) (Pauli gate) operation of each bit and (2) controlled-NOT (or SWAP) operation via bit-to-bit interaction. To earn (2), it is necessary to bring about interaction between qubits by some method, and here we investigate how to realize entanglement through electromagnetic interaction between qubits placed close to each other.

Academic Significance and Societal Importance of the Research Achievements

本研究では、スピン中心を用いた量子ビットの大規模化に必要となる、近接スピン中心の構成方法を調べました。ここで可能性が広がった母体材料やスピン中心材料を用いることにより、多量子ビットを実現する固体中のスピン中心の機能性を大きく広げることが予測されます。したがって、本研究の成果は、量子ビット、特に固体中のスピン中心を用いた情報処理研究の基盤技術となることが期待されます。

Research Products

• [Int'l Joint Research] シカゴ大学/アルゴンヌ国立研究所(米国)
• [Int'l Joint Research] シカゴ大学/アルゴンヌ国立研究所(米国)
• [Int'l Joint Research] シカゴ大学/アルゴンヌ研究所/NIST(米国)
• [Journal Article] Thermal stability of non-collinear antiferromagnetic Mn₃Sn nanodot (2023)
  • Author(s): Sato Yuma、Takeuchi Yutaro、Yamane Yuta、Yoon Ju-Young、Kanai Shun、Ieda Jun’ichi、Ohno Hideo、Fukami Shunsuke
  • Journal Title: Applied Physics Letters Volume: 122 Issue: 12 Pages: 122404-122404
  • DOI: 10.1063/5.0135709
  • Peer Reviewed
• [Journal Article] A full-stack view of probabilistic computing with p-bits: devices, architectures and algorithms (2023)
  • Author(s): Chowdhury Shuvro, Grimaldi Andrea, Aadit Navid Anjum, Niazi Shaila, Mohseni Masoud, Kanai Shun, Ohno Hideo, Fukami Shunsuke, Theogarajan Luke, Finocchio Giovanni, Datta Supriyo, Camsari Kerem Y.
  • Journal Title: IEEE Journal on Exploratory Solid-State Computational Devices and Circuits Volume: - Issue: 1 Pages: 1-11
  • DOI: 10.1109/jxcdc.2023.3256981
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] External-Field-Robust Stochastic Magnetic Tunnel Junctions Using a Free Layer with Synthetic Antiferromagnetic Coupling (2022)
  • Author(s): Kobayashi Keito、Hayakawa Keisuke、Igarashi Junta、Borders William A.、Kanai Shun、Ohno Hideo、Fukami Shunsuke
  • Journal Title: Physical Review Applied Volume: 18 Issue: 5 Pages: 054085-054085
  • DOI: 10.1103/physrevapplied.18.054085
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Local bifurcation with spin-transfer torque in superparamagnetic tunnel junctions (2022)
  • Author(s): Funatsu Takuya、Kanai Shun、Ieda Jun’ichi、Fukami Shunsuke、Ohno Hideo
  • Journal Title: Nature Communications Volume: 13 Issue: 1 Pages: 4079-4079
  • DOI: 10.1038/s41467-022-31788-1
  • Peer Reviewed / Open Access
• [Journal Article] Observation of domain structure in non-collinear antiferromagnetic Mn3Sn thin films by magneto-optical Kerr effect (2022)
  • Author(s): Uchimura Tomohiro、Yoon Ju-Young、Sato Yuma、Takeuchi Yutaro、Kanai Shun、Takechi Ryota、Kishi Keisuke、Yamane Yuta、DuttaGupta Samik、Ieda Jun'ichi、Ohno Hideo、Fukami Shunsuke
  • Journal Title: Applied Physics Letters Volume: 120 Issue: 17 Pages: 172405-172405
  • DOI: 10.1063/5.0089355
  • Peer Reviewed
• [Journal Article] Generalized scaling of spin qubit coherence in over 12,000 host materials (2022)
  • Author(s): Kanai Shun、Heremans F. Joseph、Seo Hosung、Wolfowicz Gary、Anderson Christopher P.、Sullivan Sean E.、Onizhuk Mykyta、Galli Giulia、Awschalom David D.、Ohno Hideo
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 119 Issue: 15
  • DOI: 10.1073/pnas.2121808119
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Memristive control of mutual spin Hall nano-oscillator synchronization for neuromorphic computing (2021)
  • Author(s): Zahedinejad Mohammad、Fulara Himanshu、Khymyn Roman、Houshang Afshin、Dvornik Mykola、Fukami Shunsuke、Kanai Shun、Ohno Hideo、Akerman Johan
  • Journal Title: Nature Materials Volume: 21 Issue: 1 Pages: 81-87
  • DOI: 10.1038/s41563-021-01153-6
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Sigmoidal curves of stochastic magnetic tunnel junctions with perpendicular easy axis (2021)
  • Author(s): Kobayashi Keito、Borders William A.、Kanai Shun、Hayakawa Keisuke、Ohno Hideo、Fukami Shunsuke
  • Journal Title: Applied Physics Letters Volume: 119 Issue: 13 Pages: 132406-132406
  • DOI: 10.1063/5.0065919
  • Peer Reviewed
• [Journal Article] Correlation of anomalous Hall effect with structural parameters and magnetic ordering in Mn_3+<i>x</i>Sn_1?<i>x</i> thin films (2021)
  • Author(s): Yoon Ju-Young、Takeuchi Yutaro、DuttaGupta Samik、Yamane Yuta、Kanai Shun、Ieda Jun’ichi、Ohno Hideo、Fukami Shunsuke
  • Journal Title: AIP Advances Volume: 11 Issue: 6 Pages: 065318-065318
  • DOI: 10.1063/5.0043192
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Chiral-spin rotation of non-collinear antiferromagnet by spin-orbit torque (2021)
  • Author(s): Takeuchi Yutaro、Yamane Yuta、Yoon Ju-Young、Itoh Ryuichi、Jinnai Butsurin、Kanai Shun、Ieda Jun’ichi、Fukami Shunsuke、Ohno Hideo
  • Journal Title: Nature Materials Volume: 20 Issue: 10 Pages: 1364-1370
  • DOI: 10.1038/s41563-021-01005-3
  • Peer Reviewed
• [Journal Article] Theory of relaxation time of stochastic nanomagnets (2021)
  • Author(s): S. Kanai, K. Hayakawa, H. Ohno, and S. Fukami,
  • Journal Title: Physical Review B Volume: 103 Issue: 9 Pages: 094423-094423
  • DOI: 10.1103/physrevb.103.094423
  • Peer Reviewed
• [Journal Article] Nanosecond Random Telegraph Noise in In-Plane Magnetic Tunnel Junctions (2021)
  • Author(s): K. Hayakawa, S. Kanai, T. Funatsu, J. Igarashi, B. Jinnai, W. A. Borders, H. Ohno, and S. Fukami,
  • Journal Title: Physical Review Letters Volume: 126 Issue: 11 Pages: 117202-117202
  • DOI: 10.1103/physrevlett.126.117202
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Generalized scaling of spin qubit coherence in over 12,000 host materials (2021)
  • Author(s): S. Kanai, F. J. Heremans, H. Seo, G. Wolfowicz, C. P. Anderson, S. E. Sullivan, G. Galli, D. D. Awschalom, H. Ohno
  • Journal Title: arXiv Volume: -
  • Open Access / Int'l Joint Research
• [Journal Article] Qubit guidelines for solid-state spin defects (2021)
  • Author(s): G. Wolfowicz, F. J. Heremans, C. P. Anderson, S. Kanai, H. Seo, A. Gali, G. Galli, and D. D. Awschalom,
  • Journal Title: arXiv Volume: -
  • Open Access / Int'l Joint Research
• [Journal Article] Qubit guidelines for solid-state spin defects (2021)
  • Author(s): G. Wolfowicz, F. J. Heremans, C. P. Anderson, S. Kanai, H. Seo, A. Gali, G. Galli, and D. D. Awschalom,
  • Journal Title: Nature Reviews Materials Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Memristive control of mutual SHNO synchronization for neuromorphic computing (2021)
  • Author(s): M. Zahedinejad, H. Fulara, R. Khymyn, A. Houshang, S. Fukami, S. Kanai, H. Ohno, J.Akerman
  • Journal Title: arXiv Volume: -
  • Open Access / Int'l Joint Research
• [Journal Article] All-optical probe of magnetization precession modulated by spin-orbit torque (2020)
  • Author(s): Kazuaki Ishibashi, Satoshi Iihama, Yutaro Takeuchi, Kaito Furuya, Shun Kanai, Shunsuke Fukami, Shigemi MizukamiKaito Furuya, Shun Kanai, Shunsuke Fukami, Shigemi Mizukami
  • Journal Title: Applied Physics Letters Volume: 117 Issue: 12 Pages: 122403-122403
  • DOI: 10.1063/5.0020852
  • Peer Reviewed
• [Journal Article] Giant voltage-controlled modulation of spin Hall nano-oscillator damping (2020)
  • Author(s): H. Fulara, M. Zahedinejad, R. Khymyn, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, and J. Akerman,
  • Journal Title: Nature Communications Volume: 11 Issue: 1 Pages: 4006-4006
  • DOI: 10.1038/s41467-020-17833-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Device physics of stochastic magnetic tunnel junction (2023)
  • Author(s): S. Kanai
  • Organizer: 2nd Online RIEC International Workshop on Spintronics, Online
  • Int'l Joint Research / Invited
• [Presentation] Heterogeneous probabilistic computers for optimization and sampling (2023)
  • Author(s): N. A. Aadit, A. Grimaldi, K. Selcuk, K. Kobayashi, Q. Cao, S. Chowdhury, G. Finocchio, S. Kanai, H. Ohno, S. Fukami, and K. Y. Camsari
  • Organizer: 2nd Online RIEC International Workshop on Spintronics, Online
  • Int'l Joint Research / Invited
• [Presentation] Exploring qubit host materials based on generalized scaling of spin coherence (2023)
  • Author(s): S. Kanai
  • Organizer: International Workshop of Spin and Quantum Devices and Materials, Sendai, Japan
  • Int'l Joint Research / Invited
• [Presentation] CMOS + stochastic MTJ: Heterogeneous probabilistic computers for optimization and sampling (2023)
  • Author(s): N. A. Aadit, A. Grimaldi, K. Selcuk, K. Kobayashi, Q. Cao, S. Chowdhury, G. Finocchio, S. Kanai, H. Ohno, S. Fukami, and K. Y. Camsari
  • Organizer: The 11th RIEC International Symposium on Brain Functions and Brain Computer (BFBC2023), Tohoku University, Sendai, Japan + Online
  • Int'l Joint Research / Invited
• [Presentation] CMOS+ stochastic MTJ: Heterogeneous p-computers for energy-based machine learning (2023)
  • Author(s): K. Kobayashi, Q. Cao, N. Singh, K. Selcuk, T. Hu, S. Niazi, N. Aadit, S. Kanai, H. Ohno, S. Fukami, and K. Camsari
  • Organizer: APS March Meeting 2023, Las Vegas, NV, USA
  • Int'l Joint Research
• [Presentation] Determining switching exponents with stochastic magnetic tunnel junctions (2023)
  • Author(s): S. Kanai, T. Funatsu, J. Ieda, S. Fukami, and H. Ohno
  • Organizer: APS March Meeting 2023, Las Vegas, NV, USA
  • Int'l Joint Research
• [Presentation] Sputter-deposited non-collinear antiferromagnetic Mn3Sn thin films with controlled crystal orientation (2023)
  • Author(s): J.-Y. Yoon, Y. Takeuchi, R. Itoh, S. Kanai, S. Fukami, H. Ohno
  • Organizer: 第70回応用物理学会秋季学術講演会, 上智大学四谷キャンパス（東京都千代田区）＋online
  • Invited
• [Presentation] Optical properties of MgO implanted with Ce and Li with different annealing conditions (2023)
  • Author(s): M. Kawahara, Y. Abe, S. Kanai, J. Ishihara, Y. Aoki, M. Kohda, S. Fukami, and H. Ohno
  • Organizer: 第70回応用物理学会秋季学術講演会, 上智大学四谷キャンパス（東京都千代田区）＋online
• [Presentation] Temperature dependence of relaxation time of superparamagnetic tunnel junctions (2023)
  • Author(s): H. Kaneko, R. Ota, K. Kobayashi, S. Kanai, H. Ohno, and S. Fukami,
  • Organizer: 第70回応用物理学会秋季学術講演会, 上智大学四谷キャンパス（東京都千代田区）＋online
• [Presentation] Stochasticity and Bifurcation in Spintronics Device for Probabilistic Computing (2022)
  • Author(s): S. Kanai, T. Funatsu, J. Ieda, S. Fukami, and H. Ohno
  • Organizer: 2022 International Symposium on Nonlinear Theory and Its Applications (NOLTA2022), Online
  • Int'l Joint Research / Invited
• [Presentation] Experiment and theory of superparamagnetic tunnel junction (2022)
  • Author(s): S. Kanai
  • Organizer: IMEC academy symposium, Leuven, Belgium＋Online
  • Int'l Joint Research / Invited
• [Presentation] Chiral-spin rotation of antiferromagnetic Weyl semimetal Mn3Sn by spin-orbit torque (2022)
  • Author(s): Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Itoh, R. Takechi, K. Kishi, S. DuttaGupta, S. Kanai, B. Jinnai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: Advanced Technology Institute (ATI) 2nd spintronics workshop, Online
  • Int'l Joint Research / Invited
• [Presentation] Experimental evaluation of simulated quantum annealing with MTJ-augmented p-bits (2022)
  • Author(s): A. Grimaldi, K. Selcuk, N. A. Aadit, K. Kobayashi, Q. Cao, S. Chowdhury, G. Finocchio, S. Kanai, H. Ohno, S. Fukami and K. Y. Camsari
  • Organizer: 68th Annual IEEE International Electron Devices Meeting (IEDM2022), San Francisco, USA + Online
  • Int'l Joint Research
• [Presentation] Thermal stability of non-collinear antiferromagnetic Mn3Sn nanodot (2022)
  • Author(s): Y. Sato, Y. Takeuchi, Y. Yamane, S. Kanai, J. Yoon, J. Ieda, H. Ohno and S. Fukami
  • Organizer: The 67th Annual Conference on Magnetism and Magnetic Materials, Minneapolis, USA + Online
  • Int'l Joint Research
• [Presentation] Annealing temperature dependence of optical properties of Ce doped SiO2 (2022)
  • Author(s): Y. Abe, S. Kanai, M. Kawahara, J. Ishihara, Y. Narita, M. Kohda, S. Fukami, and H. Ohno
  • Organizer: The 6th Symposium for The Core Research Clusters for Materials Science and Spintronics, Online
  • Int'l Joint Research
• [Presentation] Size dependence of thermal stability factor in non-collinear antiferromagnetic Mn3Sn nanodot (2022)
  • Author(s): Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: The 6th Symposium for The Core Research Clusters for Materials Science and Spintronics, Online
  • Int'l Joint Research
• [Presentation] Thickness dependence of anomalous Hall effect in non-collinear antiferromagnetic D019-Mn3Sn epitaxial thin films (2022)
  • Author(s): S. Wakabayashi, Y. Takeuchi, J. -Y. Yoon, Y. Sato, K. Kishi, T. Uchimura, Y. Yamane, S. Kanai, J. Ieda , H. Ohno, and S. Fukami
  • Organizer: The 6th Symposium for The Core Research Clusters for Materials Science and Spintronics, Online
  • Int'l Joint Research
• [Presentation] Insensitivity to the bias voltage in double-free-layer stochastic magnetic tunnel junction (2022)
  • Author(s): R. Ota, K. Kobayashi, K. Hayakawa, S. Kanai, K. Y. Camsari, H. Ohno, and S. Fukami
  • Organizer: The 6th Symposium for The Core Research Clusters for Materials Science and Spintronics, Online
  • Int'l Joint Research
• [Presentation] Domain imaging of an antiferromagnetic Weyl semimetal Mn3Sn thin films by magneto-optical Kerr effect (2022)
  • Author(s): T. Uchimura, J.-Y. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, R. Takechi, K. Kishi, Y. Yaman, S. DuttaGupta, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: The 6th Symposium for The Core Research Clusters for Materials Science and Spintronics, Online
  • Int'l Joint Research
• [Presentation] Electric-field induced collective spin dynamics in nanomagnet revealed by 30-ps single-shot measurements (2022)
  • Author(s): S. Kanai, Y. Nakatani, F. Matsukura, and H. Ohno
  • Organizer: Trends in MAGnetism 2022, Venice, Italy
  • Int'l Joint Research
• [Presentation] Thermal Agitation of Magnetization Dynamics Induced by Electric-field (2022)
  • Author(s): S. Kanai, Y. Nakatani, F. Matsukura, and H. Ohno
  • Organizer: 2022 Joint European Magnetic Symposia (JEMS), Warsaw, Poland + Online
  • Int'l Joint Research
• [Presentation] Magnetic Field Immunity of Stochastic Magnetic Tunnel Junctions with Synthetic Antiferromagnetic Free Layer (2022)
  • Author(s): K. Kobayashi, K. Hayakawa, J. Igarashi, W. A. Borders, S. Kanai, H. Ohno, S. Fukami
  • Organizer: 24th International Colloquium on Magnetic Films and Surfaces (ICMFS-2022), Okinawa Institute of Science and Technology Graduate University (OIST)
  • Int'l Joint Research
• [Presentation] Memristor controlled mutual synchronization of spin Hall nano-oscillators (2022)
  • Author(s): J. Akerman, M. Zahedinejad, A. A. Awad, H. Fulara, S. Muralidhar, A. Houshang, R. Khymyn, S. Fukami, S. Kanai, H. Ohno
  • Organizer: 24th International Colloquium on Magnetic Films and Surfaces (ICMFS-2022), Okinawa Institute of Science and Technology Graduate University (OIST)
  • Int'l Joint Research
• [Presentation] Magneto-optical Kerr effect study for non-collinear antiferromagnetic Mn3Sn thin films (2022)
  • Author(s): T. Uchimura, J. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, R. Takechi, K. Kishi, Y. Yamane, S. DuttaGupta, J. Ieda, H. Ohno, S. Fukami
  • Organizer: 24th International Colloquium on Magnetic Films and Surfaces (ICMFS-2022), Okinawa Institute of Science and Technology Graduate University (OIST)
  • Int'l Joint Research
• [Presentation] Thermal Effect in Electric-field Induced Magnetization Dynamics in a Nanoscale Magnetic Tunnel Junction (2022)
  • Author(s): S. Kanai, Y. Nakatani, F. Matsukura, H. Ohno
  • Organizer: 24th International Colloquium on Magnetic Films and Surfaces (ICMFS-2022), Okinawa Institute of Science and Technology Graduate University (OIST)
  • Int'l Joint Research
• [Presentation] Dot size dependence of thermal stability in non-collinear antiferromagnet Mn3Sn (2022)
  • Author(s): Y. Sato, Y. Takeuchi, Y. Yamane, J. Yoon, S. Kanai, J. Ieda, H. Ohno and S. Fukami
  • Organizer: 第83回応用物理学会秋季学術講演会, 東北大学（仙台）＋online
• [Presentation] Stochastic magnetic tunnel junctions with double free layers (2022)
  • Author(s): R. Ota, K. Kobayashi, K. Hayakawa, S. Kanai, K. Camsari, H. Ohno and S. Fukami
  • Organizer: 第83回応用物理学会秋季学術講演会, 東北大学（仙台）＋online
• [Presentation] Physical Mechanism Governing Sigmoid Curves of Stochastic Magnetic Tunnel Junctions (2021)
  • Author(s): K. Kobayashi, W.A. Borders, S. Kanai, K. Hayakawa, S. Fukami and H. Ohno
  • Organizer: INTERMAG 2021
  • Int'l Joint Research
• [Presentation] Superiority of in-Plane Easy-Axis Stochastic Nanomagnet for Shorter Relaxation Time (2021)
  • Author(s): S. Kanai, K. Hayakawa, T. Funatsu, W.A. Borders, J. Igarashi, B. Jinnai, H. Ohno and S. Fukami
  • Organizer: INTERMAG 2021
  • Int'l Joint Research / Invited
• [Presentation] Scaling of quantum coherence in solid-state spin defects (2021)
  • Author(s): 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
  • Organizer: 2021 Materials Research Society (MRS) fall meeting
  • Int'l Joint Research / Invited
• [Presentation] Anomalous Hall Effect of Non-collinear Antiferromagnetic Weyl Semimetal Mn3+xSn1-x Thin Films: Correlation with Crystalline, Magnetic, and Electronic Structures (2021)
  • Author(s): J.-Y. Yoon, Y. Takeuchi, S. DuttaGupta, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 24th International Conference on Electronic Properties of Two-Dimensional Systems 20th International Conference on Modulated Semiconductor Structures (EP2DS-24/MSS-20) meeting
  • Int'l Joint Research
• [Presentation] Scaling Electron Spin Coherence in Solid-state Spin Defects (2021)
  • Author(s): 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
  • Organizer: 24th International Conference on Electronic Properties of Two-Dimensional Systems 20th International Conference on Modulated Semiconductor Structures (EP2DS-24/MSS-20) meeting
  • Int'l Joint Research
• [Presentation] Scaling Spin Coherence in Solid-state Defect Qubit (2021)
  • Author(s): 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
  • Organizer: American Physics Society (APS) March Meeting 2022
  • Int'l Joint Research
• [Presentation] Superparamagnetic Tunnel Junctions with Nanosecond Relaxation Time forProbabilistic Computing (2021)
  • Author(s): S. Kanai, K. Hayakawa, T. Funatsu, J. Igarashi, B. Jinnai, W. A. Borders, H. Ohno, and S. Fukami
  • Organizer: American Physics Society (APS) March Meeting 2022
  • Int'l Joint Research
• [Presentation] Effect of spin-orbit torque on non-collinear antiferromagnet Mn3Sn (2021)
  • Author(s): K. Kishi, Y. Takeuchi, Y. Yamame, J.-Y. Yoon, R. Takechi, B. Jinnai, S Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: The 5th Symposium for The Core Research Clusters for Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Properties and Functionalities of Non-Collinear Antiferromagnetic Mn3+x Sn1-x Thin Films (2021)
  • Author(s): J.-Y. Yoon, Y. Takeuchi, Y. Yamane, R. Itoh, S. DuttaGupta, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: The 5th Symposium for The Core Research Clusters for Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Physical mechanism governing sigmoid curves of superparamagnetic tunnel junctions (2021)
  • Author(s): K. Kobayashi, W. A. Borders, S. Kanai, K. Hayakawa, H. Ohno, S. Fukami
  • Organizer: The 5th Symposium for The Core Research Clusters for Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Chiral-spin rotation driven by spin-orbit torque in non-collinear antiferromagnetic Mn3Sn (2021)
  • Author(s): Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Itoh, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 1st Online RIEC International Workshop on Spintronics
  • Int'l Joint Research / Invited
• [Presentation] Sputter-deposited epitaxial non-collinear antiferromagnetic Mn3Sn thin films and spin-orbit torque driven chiral-spin rotation (2021)
  • Author(s): J. Yoon, Y. Takeuchi, Y. Yamane, R. Itoh, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: KAIST spintronics group seminar
  • Int'l Joint Research / Invited
• [Presentation] Determination of attempt time using stochastic magnetic tunnel junctions (2021)
  • Author(s): K. Hayakawa, S. Kanai, K. Kobayashi, W.A. Borders, J. Igarashi, B. Jinnai, H. Ohno, and S. Fukami
  • Organizer: 15th Joint MMM-INTERMAG Conference
  • Int'l Joint Research
• [Presentation] Superparamagnetic tunnel junctions with a synthetic antiferromagnetic free layer (2021)
  • Author(s): K. Kobayashi, K. Hayakawa, W.A. Borders, S. Kanai, J. Igarashi, H. Ohno, and S. Fukami
  • Organizer: 15th Joint MMM-INTERMAG Conference
  • Int'l Joint Research
• [Presentation] Determination of spin-orbit torque efficiency in non-collinear antiferromagnet / heavy metal heterostructures (2021)
  • Author(s): K. Kishi, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Takechi, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 15th Joint MMM-INTERMAG Conference
  • Int'l Joint Research
• [Presentation] Nanosecond Stochastic Magnetic Tunnel Junctions for Probabilistic Computing - Experiment and Theory (2021)
  • Author(s): S. Kanai, K. Hayakawa, K. Kobayashi, T. Funatsu, W.A. Borders, J. Igarashi, B. Jinnai, H. Ohno, and S. Fukami
  • Organizer: 15th Joint MMM-INTERMAG Conference
  • Int'l Joint Research / Invited
• [Presentation] Chiral-spin rotation of non-collinear antiferromagnetic Mn3Sn by spin-orbit torque (2021)
  • Author(s): Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Itoh, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 15th Joint MMM-INTERMAG Conference
  • Int'l Joint Research
• [Presentation] 固体中のスピン中心におけるコヒーレンス時間のスケーリング (2021)
  • Author(s): 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
  • Organizer: The 82nd Japan Society of Applied Physics Autumn Meeting 2021
• [Presentation] Spin-orbit torque induced chiral-spin rotation of non-collinear antiferromagnet (2021)
  • Author(s): Y. Takeuchi, Y. Yamane, J. Yoon, R. Itoh, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: The 82nd Japan Society of Applied Physics Autumn Meeting 2021
• [Presentation] Spin-orbit torque efficiency in non-collinear antiferromagnet / heavy metal heterostructures (2021)
  • Author(s): K. Kishi, Y. Takeuchi, Y. Yamane, J. Yoon, R. Takechi, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: The 82nd Japan Society of Applied Physics Autumn Meeting 2021
• [Presentation] Time-averaged response of stochastic magnetic tunnel junctions to field and current (2021)
  • Author(s): K. Kobayashi, W. Borders, S. Kanai, K. Hayakawa, H. Ohno, S. Fukami
  • Organizer: The 82nd Japan Society of Applied Physics Autumn Meeting 2021
• [Presentation] Attempt time determined in stochastic magnetic tunnel junctions (2021)
  • Author(s): K. Hayakawa, S. Kanai, K. Kobayashi, W. Borders, J. Igarashi, B. Jinnai, H. Ohno, S. Fukami
  • Organizer: The 82nd Japan Society of Applied Physics Autumn Meeting 2021
• [Presentation] Stochastic magnetic tunnel junctions with a synthetic antiferromagnetic free layer (2021)
  • Author(s): K. Kobayashi, K. Hayakawa, W. Borders, S. Kanai, J. Igarashi, H. Ohno, S. Fukami
  • Organizer: The 82nd Japan Society of Applied Physics Autumn Meeting 2021
• [Presentation] Anomalous Hall effect and magneto-optical Kerr effect in non-collinear antiferromagnetic Mn3Sn thin films (2021)
  • Author(s): T. Uchimura, Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Takechi, K. Kishi, S. Kanai, H. Ohno, and S. Fukami
  • Organizer: 40th Electronic Materials Symposium EMS-40
• [Presentation] Spin-orbit torque efficiency in non-collinear antiferromagnet Mn3Sn /heavy metal heterostructures (2021)
  • Author(s): K. Kishi, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, R. Takechi, B. Jinnai, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 40th Electronic Materials Symposium EMS-40
• [Presentation] Time-averaged response of superparamagnetic tunnel junctions to magnetic field and current (2021)
  • Author(s): K. Kobayashi, W.A. Borders, S. Kanai, K. Hayakawa, H. Ohno, and S. Fukami
  • Organizer: 40th Electronic Materials Symposium EMS-40
• [Presentation] Optical properties of Y3Al5O12:Ce3+ -annealing and implantation dose density dependence (2021)
  • Author(s): S. Chiba, S. Kanai, J. Ishihara, Y. Abe, K. Hatakeyama, S. Fukami, and H. Ohno
  • Organizer: 40th Electronic Materials Symposium EMS-40
• [Presentation] スピントランスファトルク下に於ける磁気エネルギ障壁の実験的決定 (2021)
  • Author(s): 金井駿
  • Organizer: 令和3年度 東北大学 電気通信研究所 共同プロジェクト研究会 「固体中のスピン・軌道ダイナミクスとその制御」
  • Invited
• [Presentation] Observation of non-collinear antiferromagentic domain structure in epitaxial Mn3Sn thin films (2021)
  • Author(s): T. Uchimura, J.-Y. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, R. Takechi, K. Kishi, Y. Yamane, S. DuttaGupta, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 第69回応用物理学会春季学術講演会
• [Presentation] 磁気トンネル接合における磁化緩和現象 (2021)
  • Author(s): 金井駿
  • Organizer: 令和２年度 東北大学 電気通信研究所 共同プロジェクト研究会 「固体中のスピン・軌道ダイナミクスとその制御」
  • Invited
• [Presentation] Voltage-Controlled Spin Hall Nano-Oscillators For Neuromorphic Computing (2021)
  • Author(s): H. Fulara, M. Zahedinejad, R. Khymyn, M. Dvornik, S. Fukami, S. Kanai, H. Ohno, and J. Akerman
  • Organizer: The 4th International Symposium for The Core Research Cluster for Spintronics
  • Int'l Joint Research
• [Presentation] Anomalous Hall effect in Mn-Sn thin film - correlation with structural parameters and magnetic ordering (2021)
  • Author(s): J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: The 4th International Symposium for The Core Research Cluster for Spintronics
  • Int'l Joint Research
• [Presentation] All-optical detection of magnetization precession frequency modulated by spin-orbit torque (2021)
  • Author(s): K. Ishibashi, S. Iihama, Y. Takeuchi, K. Furuya, S. Kanai, S. Fukami, S. Mizukami
  • Organizer: The 4th International Symposium for The Core Research Cluster for Spintronics
  • Int'l Joint Research
• [Presentation] Magnetization Dynamics under Thermal Agitation Induced by Electric-field Effect on Magnetic Anisotropy (2021)
  • Author(s): S. Kanai, Y. Nakatani, F. Matsukura, and H. Ohno
  • Organizer: The 4th International Symposium for The Core Research Cluster for Spintronics
  • Int'l Joint Research
• [Presentation] All-optical probe of magnetization precession frequency shift due to spin-orbit torque (2021)
  • Author(s): K. Ishibashi, S. Iihama, Y. Takeuchi, K. Furuya, S. Kanai, S. Fukami, S. Mizukami
  • Organizer: Tohoku-Lorraine Joint Conference 2021 "Spintronic"
  • Int'l Joint Research
• [Presentation] Relaxation time of in-plane stochastic magnetic tunnel junctions (2021)
  • Author(s): S. Kanai, K. Hayakawa, T. Funatsu, W. A. Borders, J. Igarashi, B. Jinnai, H. Ohno, S. Fukami
  • Organizer: 第68回応用物理学会春季学術講演会
• [Presentation] エピタキシャルMn-Sn合金薄膜の異常ホール効果の組成、プロセス温度依存性 (2020)
  • Author(s): ユン ジュヨン, 竹内 祐太朗, 伊藤 隆一, 山根 結太, 金井 駿, 深見 俊輔, 大野 英男
  • Organizer: Spin-RNJ 若手オンライン研究発表会
• [Presentation] All-optical detection of magnetization precession frequency shift due to spin-orbit torque (2020)
  • Author(s): K. Ishibashi, S. Iihama, Y. Takeuchi, K. Furuya, S. Kanai, S. Fukami, S. Mizukami
  • Organizer: 第81回応用物理学会秋季学術講演会
• [Presentation] All-optical probe of magnetization precession frequency modulated by spin-orbit torque (2020)
  • Author(s): K. Ishibashi, S. Iihama, Y. Takeuchi, K. Furuya, S. Kanai, S. Fukami, S. Mizukami
  • Organizer: 65th Annual Conference on Magnetism and Magnetic Materials (MMM 2020)
• [Presentation] Anomalous Hall effect in Mn-Sn thin films - correlation with crystal structure (2020)
  • Author(s): J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, J. Ieda, H. Ohno, and S. Fukami
  • Organizer: 65th Annual Conference on Magnetism and Magnetic Materials (MMM 2020)
• [Presentation] レーザー励起磁化才差ダイナミクスに及ぼすスピン軌道トルクの効果 (2020)
  • Author(s): 石橋 一晃, 飯浜 賢志, 竹内 祐太朗, 古屋 海渡, 金井 駿, 深見 俊輔, 水上 成美
  • Organizer: 第75回応用物理学会東北支部
• [Remarks] 東北大学 電気通信研究所 深見・金井研究室
  • URL: http://www.spin.riec.tohoku.ac.jp/index.html
• [Remarks] 東北大学深見研究室
  • URL: http://www.spin.riec.tohoku.ac.jp/
• [Remarks] プレスリリース・研究成果 スピントロニクス疑似量子ビットを従来比100倍超に高速化
  • URL: http://www.tohoku.ac.jp/japanese/2021/03/press20210318-02-bit.html