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Physical properties of topological spin textures and fundamentals toward its applications

Research Project

Project/Area Number 21H01364
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionShinshu University

Principal Investigator

Liu Xiaoxi  信州大学, 学術研究院工学系, 教授 (10372509)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
KeywordsSpintronics / Topological textures / Memory / Computing / Topological spintexture / スピンテクスチャ / トポロジカル / 論理演算素子 / メモリ素子 / スピントロニクス / トポロジカルスピンテクスチャ / トポロジカルスピン論理素子 / トポロジカルスピンニューラルネットワーク / トポロジカルスピン量子ビット / トポロジカル磁性体 / 磁気スキルミオン / トポロジカルスピンメモリー / 磁性薄膜 / キラリティー / 磁性メモリー・論理素子
Outline of Research at the Start

磁気スキルミオン、磁気渦、キラリティー磁壁などトポロジカルスピンテクスチャはスピン流、電圧、光、スピン波など多数な物理量と相互作用するため、より自由度の高い制御ができる。高密度メモリ、高速論理回路、高密度蓄電池など幅広い様々な分野への応用を期待され、注目を浴びている。
本研究では、理論的、実験的に各種トポロジカルスピンテクスチャとスピン流、電圧、光、スピン波の相互作用メカニズムを解明すると共に、その低消費電力性、高速性、高密度性を実証する。すなわち、『トポロジカルスピンテクスチャの次世代論理演算・メモリ素子への応用の基盤を構築する』ことが本研究の目的である。

Outline of Final Research Achievements

Topological spin textures have been considered as prominent information carriers due to their nano-size, room temperature stability, ultra-low energy consumption and high density. The object of this research focused on the application of topological spin textures for next-generation memory and non-conventional computing devices. We have systematically investigated the driving properties of topological spin textures by electric field, magnetic field, thermal gradients, and stress. We have successfully developed effective energy barriers to protect topological spin-textures in channels. We have observed the transmission between magnetic skyrmions and bimerons. The phenomenon has potential applications in advanced neuro morphological computing. We have also proposed universal Q-bits based on helicity of topological spin-textures.

Academic Significance and Societal Importance of the Research Achievements

高速、高密度・大容量・低消費電力の情報デバイスは、Society5.0、ユビキタス・IoT化社会では重要な役割を果たしており、将来もその役割は変わることが無い。本研究のトポロジカルスピンテクスチャはサイズが小さいため高密度・大容量の特徴を持つ。電子のスピンに基づくためジュール熱の影響しない、つまり低消費電力の特徴を持つ。本研究の実施により、トポロジカルスピンテクスチャの先進機械学習、高速・高セキュリティ量子計算への応用の基礎を構築した。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (35 results)

All 2023 2022 2021

All Journal Article (26 results) (of which Int'l Joint Research: 26 results,  Peer Reviewed: 26 results,  Open Access: 9 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Chiral Skyrmions Interacting with Chiral Flowers2023

    • Author(s)
      Zhang Xichao、Xia Jing、Tretiakov Oleg A.、Ezawa Motohiko、Zhao Guoping、Zhou Yan、Liu Xiaoxi、Mochizuki Masahito
    • Journal Title

      Nano Letters

      Volume: 23 Issue: 24 Pages: 11793-11801

    • DOI

      10.1021/acs.nanolett.3c03792

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Laminar and transiently disordered dynamics of magnetic-skyrmion pipe flow2023

    • Author(s)
      Zhang Xichao、Xia Jing、Tretiakov Oleg A.、Ezawa Motohiko、Zhao Guoping、Zhou Yan、Liu Xiaoxi、Mochizuki Masahito
    • Journal Title

      Physical Review B

      Volume: 108 Issue: 14 Pages: 144428-144428

    • DOI

      10.1103/physrevb.108.144428

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reversible magnetic domain reorientation induced by magnetic field pulses of fixed direction2023

    • Author(s)
      Zhang Xichao、Xia Jing、Tretiakov Oleg A.、Zhao Guoping、Zhou Yan、Mochizuki Masahito、Liu Xiaoxi、Ezawa Motohiko
    • Journal Title

      Physical Review B

      Volume: 108 Issue: 6 Pages: 0644101-14

    • DOI

      10.1103/physrevb.108.064410

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Universal Quantum Computation Based on Nanoscale Skyrmion Helicity Qubits in Frustrated Magnets2023

    • Author(s)
      Xia Jing、Zhang Xichao、Liu Xiaoxi、Zhou Yan、Ezawa Motohiko
    • Journal Title

      Physical Review Letters

      Volume: 130 Issue: 10 Pages: 1067011-4

    • DOI

      10.1103/physrevlett.130.106701

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Skyrmion-based reconfigurable logic gates and diodes in a racetrack with hard magnetic material and a notch2023

    • Author(s)
      Shu Yun、Li Qianrui、Xia Jing、Lai Ping、Zhao Yonghong、Zhou Yan、Liu Xiaoxi、Zhao Guoping
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 568 Pages: 170387-170387

    • DOI

      10.1016/j.jmmm.2023.170387

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Skyrmion-based logic gates controlled by electric currents in synthetic antiferromagnet2023

    • Author(s)
      Li Linlin、Luo Jia、Xia Jing、Zhou Yan、Liu Xiaoxi、Zhao Guoping
    • Journal Title

      Chinese Physics B

      Volume: 32 Issue: 1 Pages: 017506-017506

    • DOI

      10.1088/1674-1056/ac9b01

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonreciprocal dynamics of ferrimagnetic bimerons2022

    • Author(s)
      Shen Laichuan、Xia Jing、Chen Zehan、Li Xiaoguang、Zhang Xichao、Tretiakov Oleg A.、Shao Qiming、Zhao Guoping、Liu Xiaoxi、Ezawa Motohiko、Zhou Yan
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 1 Pages: 014422-014422

    • DOI

      10.1103/physrevb.105.014422

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Controlled Switching of the Number of Skyrmions in a Magnetic Nanodot by Electric Fields2022

    • Author(s)
      Hou Zhipeng、Wang Yadong、Lan Xiaoming、Li Sai、Wan Xuejin、Meng Fei、Hu Yangfan、Fan Zhen、Feng Chun、Qin Minghui、Zeng Min、Zhang Xichao、Liu Xiaoxi、Fu Xuewen、Yu Guanghua、Zhou Guofu、Zhou Yan、Zhao Weisheng、Gao Xingsen、Liu Jun‐ming
    • Journal Title

      Advanced Materials

      Volume: 34 Issue: 11 Pages: 2107908-2107908

    • DOI

      10.1002/adma.202107908

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Structural transition of skyrmion quasiparticles under compression2022

    • Author(s)
      Zhang Xichao、Xia Jing、Liu Xiaoxi
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 18

    • DOI

      10.1103/physrevb.105.184402

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Domain wall memory: Physics; materials; and devices2022

    • Author(s)
      D. Kumar; T. Jin; R. Sbiaa; M. Klaui; S. Bedanta; S. Fukami; D. Ravelosona; S. Yang; X. Liu; S.N. Piramanayagam
    • Journal Title

      Physics Reports

      Volume: 958 Pages: 1-35

    • DOI

      10.1016/j.physrep.2022.02.001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Bifurcation of a topological skyrmion string2022

    • Author(s)
      Xia Jing、Zhang Xichao、Tretiakov Oleg A.、Diep Hung T.、Yang Jinbo、Zhao Guoping、Ezawa Motohiko、Zhou Yan、Liu Xiaoxi
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 21

    • DOI

      10.1103/physrevb.105.214402

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generation and manipulation of skyrmions and other topological spin structures with rare metals2022

    • Author(s)
      Ye Chu、Li Lin-Lin、Shu Yun、Li Qian-Rui、Xia Jing、Hou Zhi-Peng、Zhou Yan、Liu Xiao-Xi、Yang Yun-You、Zhao Guo-Ping
    • Journal Title

      Rare Metals

      Volume: 41 Issue: 7 Pages: 2200-2216

    • DOI

      10.1007/s12598-021-01908-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Single-bit full adder and logic gate based on synthetic antiferromagnetic bilayer skyrmions2022

    • Author(s)
      Mak Kai Yu、Xia Jing、Zhang Xi-Chao、Li Li、Fattouhi Mouad、Ezawa Motohiko、Liu Xiao-Xi、Zhou Yan
    • Journal Title

      Rare Metals

      Volume: 41 Issue: 7 Pages: 2249-2258

    • DOI

      10.1007/s12598-022-01981-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Realization of the skyrmionic logic gates and diodes in the same racetrack with enhanced and modified edges2022

    • Author(s)
      Shu Yun、Li Qianrui、Xia Jing、Lai Ping、Hou Zhipeng、Zhao Yonghong、Zhang Degang、Zhou Yan、Liu Xiaoxi、Zhao Guoping
    • Journal Title

      Applied Physics Letters

      Volume: 121 Issue: 4 Pages: 042402-042402

    • DOI

      10.1063/5.0097152

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonlinear dynamics of the topological helicity wave in a frustrated skyrmion string2022

    • Author(s)
      Xia Jing、Zhang Xichao、Liu Xiaoxi、Zhou Yan、Ezawa Motohiko
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 5

    • DOI

      10.1103/physrevb.106.054414

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Particle-like skyrmions interacting with a funnel obstacle2022

    • Author(s)
      Zhang Xichao、Xia Jing、Liu Xiaoxi
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 9

    • DOI

      10.1103/physrevb.106.094418

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reversible Transformation between Isolated Skyrmions and Bimerons2022

    • Author(s)
      Ohara Kentaro、Zhang Xichao、Chen Yinling、Kato Satoshi、Xia Jing、Ezawa Motohiko、Tretiakov Oleg A.、Hou Zhipeng、Zhou Yan、Zhao Guoping、Yang Jinbo、Liu Xiaoxi
    • Journal Title

      Nano Letters

      Volume: 22 Issue: 21 Pages: 8559-8566

    • DOI

      10.1021/acs.nanolett.2c03106

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Qubits based on merons in magnetic nanodisks2022

    • Author(s)
      Xia Jing、Zhang Xichao、Liu Xiaoxi、Zhou Yan、Ezawa Motohiko
    • Journal Title

      Communications Materials

      Volume: 3 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s43246-022-00311-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Current-induced dynamics of skyrmion tubes in synthetic antiferromagnetic multilayers2021

    • Author(s)
      Xia Jing、Zhang Xichao、Mak Kai-Yu、Ezawa Motohiko、Tretiakov Oleg A.、Zhou Yan、Zhao Guoping、Liu Xiaoxi
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 17 Pages: 174408-174408

    • DOI

      10.1103/physrevb.103.174408

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Confinement and Protection of Skyrmions by Patterns of Modified Magnetic Properties2021

    • Author(s)
      Ohara Kentaro、Zhang Xichao、Chen Yinling、Wei Zonhan、Ma Yungui、Xia Jing、Zhou Yan、Liu Xiaoxi
    • Journal Title

      Nano Letters

      Volume: 21 Issue: 10 Pages: 4320-4326

    • DOI

      10.1021/acs.nanolett.1c00865

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Logic Gates Based on Synthetic Antiferromagnetic Bilayer Skyrmions2021

    • Author(s)
      Fattouhi Mouad、Mak Kai Yu、Zhou Yan、Zhang Xichao、Liu Xiaoxi、El Hafidi Mohamed
    • Journal Title

      Physical Review Applied

      Volume: 16 Issue: 1 Pages: 014040-014040

    • DOI

      10.1103/physrevapplied.16.014040

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Transcription and logic operations of magnetic skyrmions in bilayer cross structures2021

    • Author(s)
      Mak Kai Yu、Xia Jing、Zhang Xichao、Ezawa Motohiko、Liu Xiaoxi、Zhou Yan
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 33 Issue: 40 Pages: 404001-404001

    • DOI

      10.1088/1361-648x/ac117e

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Antiferromagnetic skyrmion-based logic gates controlled by electric currents and fields2021

    • Author(s)
      Liang Xue、Xia Jing、Zhang Xichao、Ezawa Motohiko、Tretiakov Oleg A.、Liu Xiaoxi、Qiu Lei、Zhao Guoping、Zhou Yan
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 6 Pages: 062403-062403

    • DOI

      10.1063/5.0056259

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamics of ferrimagnetic skyrmionium driven by spin-orbit torque2021

    • Author(s)
      Liang Xue、Zhang Xichao、Shen Laichuan、Xia Jing、Ezawa Motohiko、Liu Xiaoxi、Zhou Yan
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 17 Pages: 174421-174421

    • DOI

      10.1103/physrevb.104.174421

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Configurable pixelated skyrmions on nanoscale magnetic grids2021

    • Author(s)
      Zhang Xichao、Xia Jing、Shirai Keiichiro、Fujiwara Hiroshi、Tretiakov Oleg A.、Ezawa Motohiko、Zhou Yan、Liu Xiaoxi
    • Journal Title

      Communications Physics

      Volume: 4 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s42005-021-00761-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamic transformation between a skyrmion string and a bimeron string in a layered frustrated system2021

    • Author(s)
      Zhang Xichao、Xia Jing、Tretiakov Oleg A.、Diep Hung T.、Zhao Guoping、Yang Jinbo、Zhou Yan、Ezawa Motohiko、Liu Xiaoxi
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 22

    • DOI

      10.1103/physrevb.104.l220406

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Confinement and Protection of Magnetic Skyrmions2022

    • Author(s)
      X. Liu, K. Ohara, X. Zhang, Y. Chen, Z. Wei, Y. Ma, J. Xia, Y. Zhou
    • Organizer
      The 2022 Joint MMM-INTERMAG Conference, Online Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Configurable Pixelated Skyrmions on Nanoscale Grids2022

    • Author(s)
      X. Zhang, J. Xia, K. Shirai, H. Fujiwara, O. Tretiakov, M. Ezawa, Y. Zhou, X. Liu,
    • Organizer
      The 2022 Joint MMM-INTERMAG Conference, Online Meeting,
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Creation and Annihilation of Skyrmion Bubbles by Profile-Programmed Alternating Magnetic Field Pulses2022

    • Author(s)
      Y. Chen, K. Ohara, X. Zhang, J. Xia, Z. Wei, Y. Zhou, X. Liu
    • Organizer
      The 2022 Joint MMM-INTERMAG Conference, Online Meeting,
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Control of a Magnetic Skyrmionium on a TbFeCo Thin Film2022

    • Author(s)
      S. Kato, K. Ohara, X. Zhang, J. Xia, X. Liu
    • Organizer
      The 2022 Joint MMM-INTERMAG Conference, Online Meeting,
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TbFeCo膜上の磁気スキルミオニウムの制御2021

    • Author(s)
      加藤 叡, 大原 健太郎, 張 溪超, 夏 静, 劉 小晰,
    • Organizer
      第45回日本磁気学会学術講演会, Online Meeting,
    • Related Report
      2021 Annual Research Report
  • [Presentation] 磁気スキルミオンの閉じ込め・保護の効果2021

    • Author(s)
      大原 健太郎, 張 溪超, 陳 銀玲, 夏 静, 周 艶, 劉 小晰,
    • Organizer
      第45回日本磁気学会学術講演会, Online Meeting,
    • Related Report
      2021 Annual Research Report
  • [Presentation] Configurable Pixelated Skyrmions on Nanoscale Grids2021

    • Author(s)
      X. Zhang, J. Xia, K. Shirai, H. Fujiwara, O. A. Tretiakov, M. Ezawa, Y. Zhou, X. Liu,
    • Organizer
      第45回日本磁気学会学術講演会, Online Meeting,
    • Related Report
      2021 Annual Research Report
  • [Presentation] Static Structures and Dynamics of Frustrated Topological Spin Textures2021

    • Author(s)
      X. Zhang, J. Xia, M. Ezawa, O. Tretiakov, H.T. Diep, Z. Hou, W. Wang, G. Zhao, Y. Zhou, X. Liu
    • Organizer
      The 2021 IEEE International Magnetics Conference, Online Meeting
    • Related Report
      2021 Annual Research Report
  • [Presentation] Frustrated Magnetic Skyrmions and Bimerons2021

    • Author(s)
      X. Zhang
    • Organizer
      SKYMAG 2021, Online Meeting
    • Related Report
      2021 Annual Research Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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