Spin Current Generation Using a Surface Acoustic Wave Generated via Spin-Rotation Coupling

D. Kobayashi, T. Yoshikawa, M. Matsuo, R. Iguchi, S. Maekawa, E. Saitoh, Yukio Nozaki

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We demonstrate the generation of alternating spin current (SC) via spin-rotation coupling (SRC) using a surface acoustic wave (SAW) in a Cu film. Ferromagnetic resonance caused by injecting SAWs was observed in a Ni-Fe film attached to a Cu film, with the resonance further found to be suppressed through the insertion of a SiO2 film into the interface. The intensity of the resonance depended on the angle between the wave vector of the SAW and the magnetization of the Ni-Fe film. This angular dependence is explicable in terms of the presence of spin transfer torque from a SC generated via SRC.

Original languageEnglish
Article number077202
JournalPhysical Review Letters
Issue number7
Publication statusPublished - 2017 Aug 16


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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