Einstein-de Haas phase shifts in surface acoustic waves

Shoma Tateno, Yuki Kurimune, Mamoru Matsuo, Kazuto Yamanoi, Yukio Nozaki

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We demonstrate the phase shift of the Rayleigh-type surface acoustic wave (RSAW) in a ferromagnetic Ni81Fe19 film based on the gyromagnetic Einstein-de Haas (EdH) torque that can be attributed to the back action of spin-wave excitation. The EdH torque modulates the transverse velocity of the bulk acoustic wave that causes the bipolar phase shift of RSAW. When compared with a magnetoelastic torque, the phase shift can be more prominently enhanced by increasing the frequency. The gyromagnetic torque in the RSAW paves the way for controlling spin-mechatronics devices without magnetoelastic torque which is specific to a certain material.

本文言語English
論文番号L020404
ジャーナルPhysical Review B
104
2
DOI
出版ステータスPublished - 2021 7月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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