反強磁性ワイルセミメタル薄膜のスピン物性と機能性に関する研究

2023 Fiscal Year Annual Research Report

• Project/Area Number: 22KJ0203
• Allocation Type: Multi-year Fund
• Research Institution: Tohoku University
• Principal Investigator: YOON JU YOUNG 東北大学, 工学研究科, 特別研究員(PD)
• Project Period (FY): 2023-03-08 – 2024-03-31
• Keywords: スピントロニクス / 反強磁性体 / ノンコリニア反強磁性体 / 結晶成長

Outline of Annual Research Achievements

今年度は最終年度となり、本課題で行った研究を論文としてまとめて発表したのが主要活動となる。成果として、学術誌2編、国内学会発表8件（うち招待講演1件）、国外学会発表15件（うち招待講演5件）、受賞2件、その他3件となる。特に材料科学と物理学の分野で世界的に著名な学術誌であるNature Materials誌とNature Physics誌に投稿した論文が発表されており、Nature Materials誌で発表された論文の内容については国外学会にて5回の招待講演を行った。
本成果は本研究課題の初期課題であった、反強磁性ワイルセミメタルMn3Sn薄膜の作製とその薄膜品質の向上と繋がる研究成果であり、高品質のM面及びC面配向のMn3Sn薄膜を用いたヘテロ構造での輸送特性を調べ、以下のような研究成果が得られた。
M面配向Mn3Sn/重金属ヘテロ構造では重金属から生成されたスピンをMn3Sn層に注入することより、Mn3Snの磁気秩序を代表するオクタポールが従来のコリニア磁性体の磁気秩序とは真逆のダイナミクスを有することを明らかにした。
C面配向Mn3Sn/Ptヘテロ構造ではPtの強いスピン軌道相互作用によってMn3Snのカイラルスピン構造が歪み、非線形はホール効果が生じることを明らかにした。

Research Products

• [Int'l Joint Research] Polish Academy of Sciences(ポーランド)
  • Country Name: POLAND
  • Counterpart Institution: Polish Academy of Sciences
• [Journal Article] Room-temperature flexible manipulation of the quantum-metric structure in a topological chiral antiferromagnet (2024)
  • Author(s): Han Jiahao、Uchimura Tomohiro、Araki Yasufumi、Yoon Ju-Young、Takeuchi Yutaro、Yamane Yuta、Kanai Shun、Ieda Jun’ichi、Ohno Hideo、Fukami Shunsuke
  • Journal Title: Nature Physics Volume: - Pages: -
  • DOI: 10.1038/s41567-024-02476-2
  • Peer Reviewed
• [Journal Article] Handedness anomaly in a non-collinear antiferromagnet under spin-orbit torque (2023)
  • Author(s): Yoon Ju-Young、Zhang Pengxiang、Chou Chung-Tao、Takeuchi Yutaro、Uchimura Tomohiro、Hou Justin T.、Han Jiahao、Kanai Shun、Ohno Hideo、Fukami Shunsuke、Liu Luqiao
  • Journal Title: Nature Materials Volume: 22 Pages: 1106～1113
  • DOI: 10.1038/s41563-023-01620-2
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Current-induced hysteresis loop shift in non-collinear antiferromagnetic heterostructure (2024)
  • Author(s): T. Uchimura, Y. Yamane, T. Dohi, J. Han, J.-Y. Yoon, Y. Sato, S. Wakabayashi, Y. Takeuchi, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: The 71st Japan Society of Applied Physics Spring Meeting 2024
  • Invited
• [Presentation] Field-like torque origin of the unconventional spin Hall magnetoresistance in a noncollinear antiferromagnet (2024)
  • Author(s): T. Uchimura, J. Han, P. Tang, J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, G. E. W. Bauer, H. Ohno, S. Fukami
  • Organizer: Spin-RNJ 2023
• [Presentation] Dot size dependence of thermal stability factor in non-collinear antiferromagnetic Mn3Sn (2024)
  • Author(s): Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: Spin-RNJ 2023
• [Presentation] Thermal stability of non-collinear antiferromagnet Mn3Sn nanoscale single dots (2024)
  • Author(s): Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: PASPS-27
• [Presentation] Field-like torque origin of the unconventional spin Hall magnetoresistance in a noncollinear antiferromagnet (2024)
  • Author(s): T. Uchimura, J. Han, P. Tang, J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, G. E. W. Bauer, H. Ohno, S. Fukami
  • Organizer: PASPS-27
• [Presentation] Size dependence of thermal stability factor in non-collinear antiferromagnet Mn3Sn nanodot (2024)
  • Author(s): Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: Iwate Spintronics School, 2024 Winter
  • Int'l Joint Research
• [Presentation] Unconventional spin Hall magnetoresistance in a non-collinear antiferromagnet/heavy metal stack (2024)
  • Author(s): T. Uchimura, J. Han, P. Tang, J.-Y. Yoon, Y. Takeuchi, Y. Yamane, S. Kanai, G. E. W. Bauer, H. Ohno, S. Fukami
  • Organizer: Iwate Spintronics School, 2024 Winter
  • Int'l Joint Research
• [Presentation] Magnetic studies of epitaxial thin films of noncollinear Weyl antiferromagnet Mn3Sn (2024)
  • Author(s): K. Gas, S. Wakabayashi, T. Uchimura, J.-Y. Yoon, Y. Takeuchi, S. Kanai, M. Sawicki, H. Ohno, S. Fukami
  • Organizer: International Symposium on Quantum Electronics
  • Int'l Joint Research
• [Presentation] Size dependence of thermal stability in polycrystalline Mn3Sn nanodots (2023)
  • Author(s): H. Kubota, Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, T. Uchimura, S. Wakabayashi, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: 42nd Electronic Materials Symposium EMS-42
• [Presentation] Interfacial Dzyaloshinskii-Moriya interaction in a non-collinear antiferromagnet/heavy metal heterostructure (2023)
  • Author(s): T. Uchimura, Y. Yamane, T. Dohi, J.-Y. Yoon, Y. Sato, S. Wakabayashi, Y. Takeuchi, S. Kanai, J. Idea, H. Ohno, S. Fukami
  • Organizer: The 83rd Japan Society of Applied Physics Autumn Meeting 2023
• [Presentation] Crystalline structure, magnetic and magnetotransport properties of Mn3Sn thin films with various thicknesses (2023)
  • Author(s): S. Wakabayashi, J.-Y. Yoon, K. Gas, Y. Takeuchi, Y. Yamane, T. Uchimura, Y. Sato, K. Kishi, S. Kanai, M. Sawicki, H. Ohno, S. Fukami
  • Organizer: The 83rd Japan Society of Applied Physics Autumn Meeting 2023
• [Presentation] Handedness anomaly in the dynamics of a non-collinear antiferromagnet driven by spin-orbit torque (2023)
  • Author(s): J.-Y. Yoon, P. Zhang, C.-T. Chou, Y. Takeuchi, T. Uchimura, J. T. Hou, J. Han, S. Kanai, H. Ohno, S. Fukami, L. Liu
  • Organizer: The 13th International Conference on Advanced Materials and Devices
  • Int'l Joint Research / Invited
• [Presentation] Studies of magnetic properties of epitaxial thin films of noncollinear Weyl antiferromagnet Mn3Sn (2023)
  • Author(s): K. Gas, S. Wakabayashi, T. Uchimura, J.-Y. Yoon, Y. Takeuchi, S. Kanai, M. Sawicki, H. Ohno, S. Fukami
  • Organizer: The 7th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 6th Symposium on International Joint Graduate Program in Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Dot size dependence of thermal stability factor in polycrystalline Mn3Sn (2023)
  • Author(s): H. Kubota, Y. Sato, Y. Takeuchi, Y. Yamane, J.-Y. Yoon, T. Uchimura, S. Wakabayashi, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: The 7th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 6th Symposium on International Joint Graduate Program in Materials Science and Spintronics
  • Int'l Joint Research
• [Presentation] Electrical control of noncollinear antiferromagnetic Mn3Sn thin film (2023)
  • Author(s): J.-Y. Yoon, P. Zhang, C.-T. Chou, Y. Takeuchi, T. Uchimura, J. T. Hou, J. Han, S. Kanai, H. Ohno, S. Fukami, L. Liu
  • Organizer: 5th Polish Japanese Workshop on Spintronics
  • Int'l Joint Research / Invited
• [Presentation] Interfacial Dzyaloshinskii-Moriya interaction in a non-collinear antiferromagnet/heavy metal heterostructure (2023)
  • Author(s): T. Uchimura, Y. Yamane, T. Dohi1, J. Han, J.-Y. Yoon, Y. Sato, S. Wakabayashi, Y. Takeuchi, S. Kanai, J. Ieda, H. Ohno, S. Fukami
  • Organizer: 68th Annual Conference on Magnetism and Magnetic Materials
  • Int'l Joint Research
• [Presentation] Comprehensive study of crystalline structure, magnetic and magnetotransport properties of Mn3Sn thin films with various thicknesses (2023)
  • Author(s): S. Wakabayashi, J.-Y. Yoon, K. Gas, Y. Takeuchi, Y. Yamane, T. Uchimura, Y. Sato, K. Kishi, S. Kanai, M. Sawicki, H. Ohno, S. Fukami
  • Organizer: 68th Annual Conference on Magnetism and Magnetic Materials
  • Int'l Joint Research
• [Presentation] Handedness anomaly in a non-collinear antiferromagnet under spin-orbit torque (2023)
  • Author(s): J. Han, J.-Y. Yoon, P. Zhang, C.-T. Chou, Y. Takeuchi, T. Uchimura, J. T. Hou, S. Kanai, H. Ohno, S. Fukami, L. Liu
  • Organizer: 5th International Workshop on Spintronics Memory and Logic
  • Int'l Joint Research / Invited
• [Presentation] Experimental Methods of Quantifying Magnetism of Thin Antiferromagnetic Layers Deposited on MgO Substrates (2023)
  • Author(s): K. Gas, S. Wakabayashi, T. Uchimura, J.-Y. Yoon, Y. Takeuchi, S. Kanai, S. Fukami, H. Ohno, M. Sawicki
  • Organizer: Joint European Magnetic Symposia 2023
  • Int'l Joint Research
• [Presentation] Domain imaging in non-collinear antiferromagnetic Mn3Sn thin film by magneto-optical Kerr effect (2023)
  • Author(s): T. Uchimura, J.-Y. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, H. Ohno, S. Fukami
  • Organizer: Gordon Research Conference "Spin Dynamics in Nanostructures"
  • Int'l Joint Research
• [Presentation] Domain imaging in non-collinear antiferromagnetic Mn3Sn thin film by magneto-optical Kerr effect (2023)
  • Author(s): T. Uchimura, J.-Y. Yoon, Y. Sato, Y. Takeuchi, S. Kanai, H. Ohno, S. Fukami
  • Organizer: Gordon Research Seminar "Spin Dynamics in Nanostructures"
  • Int'l Joint Research
• [Presentation] Handedness anomaly in the octupole dynamics of a non-collinear antiferromagnet driven by spin-orbit torque (2023)
  • Author(s): J.-Y. Yoon, P. Zhang, C.-T. Chou, Y. Takeuchi, T. Uchimura, J.T. Hou, J. Han, S. Kanai, H. Ohno, S. Fukami, L. Liu,
  • Organizer: The 1st Young Scholars Workshop in Spintronics
  • Int'l Joint Research / Invited
• [Presentation] Unconventional octupole dynamics of a non-collinear antiferromagnet driven by spin-orbit torque (2023)
  • Author(s): J.-Y. Yoon, P. Zhang, C.-T. Chou, Y. Takeuchi, T. Uchimura, J.T. Hou, J. Han, S. Kanai, H. Ohno, S. Fukami, L. Liu,
  • Organizer: Intermag 2023
  • Int'l Joint Research / Invited