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; Y. Nozaki

doi:10.1103/PhysRevLett.119.077202

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, Y. Nozaki

Department of Physics

Research output: Contribution to journal › Article › peer-review

101 Citations (Scopus)

Abstract

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 language	English
Article number	077202
Journal	Physical review letters
Volume	119
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.119.077202
Publication status	Published - 2017 Aug 16

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.119.077202

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title = "Spin Current Generation Using a Surface Acoustic Wave Generated via Spin-Rotation Coupling",

abstract = "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.",

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AU - Kobayashi, D.

AU - Yoshikawa, T.

AU - Matsuo, M.

AU - Iguchi, R.

AU - Maekawa, S.

AU - Saitoh, E.

AU - Nozaki, Y.

PY - 2017/8/16

Y1 - 2017/8/16

N2 - 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.

AB - 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.

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

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