• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study of antiferromagnetic spin-mechatronics

Research Project

Project/Area Number 21K18890
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 29:Applied condensed matter physics and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

SHIOMI YUKI  東京大学, 大学院総合文化研究科, 准教授 (10633969)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsスピンメカニクス / 反強磁性体 / 圧磁気効果 / スピン流 / スピンメカトロニクス / ピエゾ磁気効果
Outline of Research at the Start

近年のスピントロニクス分野において、漏れ磁場がなく超高密度記憶素子の実現が可能な反強磁性体材料が注目を集めている(反強磁性スピントロニクス)。本研究では、反強磁性スピントロニクスに力学機能を初めて追加し、反強磁性スピンメカトロニクスを開拓する。具体的には、スピン角運動量の流れであるスピン流によって低対称反強磁性体の変形をピエゾ磁気効果を介して引き起こすことを目指す。

Outline of Final Research Achievements

Recently, antiferromagnetic materials have attracted much attention in the field of spintronics, since they have no leakage magnetic field and enable the realization of ultra-high density storage devices (antiferromagnetic spintronics). The aim of this study is to develop a mechanical function in the antiferromagnetic spintronics for the first time and to explore antiferromagnetic spin mechatronics. Specifically, we aimed to drive the motion of antiferromagnets by spin current, a flow of spin angular momentum, and, as an opposite effect, to modulate the spin current transport by deformation of the antiferromagnets. In fact, we sucessfully observed the modulation of pure spin current transport by uniaxial pressure in antiferromagnetic insulator α-Fe2O3/Pt systems.

Academic Significance and Societal Importance of the Research Achievements

反強磁性絶縁体α-Fe2O3にPt薄膜を接合した系で一軸歪みによる純スピン流現象の変調を観測することができたことは、反強磁性スピンメカトロニクス開拓の第一歩と言える。観測された歪みによるスピン流変調が、予想していた圧磁気効果に由来するものであるかどうかは今後の精査が必要であるが、逆効果によりスピン角運動量の流れであるスピン流によって反強磁性体の変形を引き起こすことが期待できる。圧磁気効果を利用した物体駆動は物質開発により巨大化が狙えるため、低消費電力な純スピン流を利用した効率的な磁性体駆動技術開発につながると期待される。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Trapping and manipulating skyrmions in two-dimensional films by surface acoustic waves2023

    • Author(s)
      Miyazaki Yu、Yokouchi Tomoyuki、Shiomi Yuki
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 1922-1922

    • DOI

      10.1038/s41598-023-29022-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Giant Magnetochiral Anisotropy in Weyl Semimetal WTe2 Induced by Diverging Berry Curvature2023

    • Author(s)
      Yokouchi Tomoyuki、Ikeda Yuya、Morimoto Takahiro、Shiomi Yuki
    • Journal Title

      Physical Review Letters

      Volume: 130 Issue: 13 Pages: 136301-136301

    • DOI

      10.1103/physrevlett.130.136301

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase-change control of anomalous Hall effect in ferromagnetic MnBi thin films2022

    • Author(s)
      Zhang Siyue、Miyazaki Yu、Yokouchi Tomoyuki、Shiomi Yuki
    • Journal Title

      Applied Physics Letters

      Volume: 121 Issue: 26 Pages: 262402-262402

    • DOI

      10.1063/5.0121284

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modulation of spin Seebeck effect by hydrogenation2022

    • Author(s)
      Ogata K.、Kikkawa T.、Saitoh E.、Shiomi Y.
    • Journal Title

      Applied Physics Letters

      Volume: 120 Issue: 7 Pages: 072405-072405

    • DOI

      10.1063/5.0083012

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhancement of Current-Induced Out-of-Plane Spin Polarization by Heavy-Metal-Impurity Doping in Fe Thin Films2021

    • Author(s)
      Yokouchi T.、Shiomi Y.
    • Journal Title

      Physical Review Applied

      Volume: 16 Issue: 5 Pages: 054001-054001

    • DOI

      10.1103/physrevapplied.16.054001

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Reconfigurable single-material Peltier effect using magnetic phase junctions2022

    • Author(s)
      Yuki Shiomi
    • Organizer
      Young Research Leaders Group Workshop: Spins, Orbits, Charges, and Heat in Magnets
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] スピントロニクスの基礎と応用 理論、モデル、デバイス2021

    • Author(s)
      Tomasz Blachowicz、Andrea Ehrmann、塩見 雄毅
    • Total Pages
      336
    • Publisher
      講談社
    • ISBN
      9784065240922
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi