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Spin Seebeck mechanical force

Author

Listed:
  • Kazuya Harii

    (Japan Atomic Energy Agency
    Tohoku University)

  • Yong-Jun Seo

    (Tohoku University)

  • Yasumasa Tsutsumi

    (RIKEN Center for Emergent Matter Science)

  • Hiroyuki Chudo

    (Japan Atomic Energy Agency)

  • Koichi Oyanagi

    (Tohoku University)

  • Mamoru Matsuo

    (RIKEN Center for Emergent Matter Science
    University of Chinese Academy of Sciences)

  • Yuki Shiomi

    (RIKEN Center for Emergent Matter Science
    The University of Tokyo
    The University of Tokyo)

  • Takahito Ono

    (Tohoku University)

  • Sadamichi Maekawa

    (Japan Atomic Energy Agency
    RIKEN Center for Emergent Matter Science
    University of Chinese Academy of Sciences)

  • Eiji Saitoh

    (Japan Atomic Energy Agency
    Tohoku University
    Tohoku University
    The University of Tokyo)

Abstract

Electric current has been used to send electricity to far distant places. On the other hand, spin current, a flow of electron spin, can in principle also send angular momentum to distant places. In a magnet, there is a universal spin carrier called a spin wave, a wave-type excitation of magnetization. Since spin waves exhibit a long propagation length, it should be able to send angular momentum that can generate torque and force at a distant place: a new function of magnets. Here we observe mechanical angular momentum transmission and force generation due to spin waves injected into Y3Fe5O12 by the spin-Seebeck effect. The spin-wave current, transmitted through a Y3Fe5O12 micro cantilever, was found to create a mechanical force on the cantilever as a non-local reaction of the spin-Seebeck effect. Spin-wave current can be generated remotely even in open circuits, and it can be used to drive micro mechanical devices.

Suggested Citation

  • Kazuya Harii & Yong-Jun Seo & Yasumasa Tsutsumi & Hiroyuki Chudo & Koichi Oyanagi & Mamoru Matsuo & Yuki Shiomi & Takahito Ono & Sadamichi Maekawa & Eiji Saitoh, 2019. "Spin Seebeck mechanical force," Nature Communications, Nature, vol. 10(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10625-y
    DOI: 10.1038/s41467-019-10625-y
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