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Observation of spin-current striction in a magnet

Author

Listed:
  • Hiroki Arisawa

    (Institute for Materials Research, Tohoku University)

  • Hang Shim

    (Tohoku University)

  • Shunsuke Daimon

    (The University of Tokyo
    Institute for AI and Beyond, The University of Tokyo)

  • Takashi Kikkawa

    (Institute for Materials Research, Tohoku University
    The University of Tokyo
    WPI, Advanced Institute for Materials Research, Tohoku University)

  • Yasuyuki Oikawa

    (WPI, Advanced Institute for Materials Research, Tohoku University)

  • Saburo Takahashi

    (WPI, Advanced Institute for Materials Research, Tohoku University)

  • Takahito Ono

    (Tohoku University
    Micro System Integration Center (μ-SiC), Tohoku University)

  • Eiji Saitoh

    (Institute for Materials Research, Tohoku University
    The University of Tokyo
    Institute for AI and Beyond, The University of Tokyo
    WPI, Advanced Institute for Materials Research, Tohoku University)

Abstract

The interplay among magnetization and deformation of solids has long been an important issue in magnetism, the elucidation of which has made great progress in material physics. Controlling volume and shapes of matter is now indispensable to realizing various actuators for precision machinery and nanotechnology. Here, we show that the volume of a solid can be manipulated by injecting a spin current: a spin current volume effect (SVE). By using a magnet Tb0.3Dy0.7Fe2 exhibiting strong spin-lattice coupling, we demonstrate that the sample volume changes in response to a spin current injected by spin Hall effects. Theoretical calculation reflecting spin-current induced modulation of magnetization fluctuation well reproduces the experimental results. The SVE expands the scope of spintronics into making mechanical drivers.

Suggested Citation

  • Hiroki Arisawa & Hang Shim & Shunsuke Daimon & Takashi Kikkawa & Yasuyuki Oikawa & Saburo Takahashi & Takahito Ono & Eiji Saitoh, 2022. "Observation of spin-current striction in a magnet," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30115-y
    DOI: 10.1038/s41467-022-30115-y
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