Frequency dependence of spin pumping in Pt/Y3Fe 5O12 film

Kazuya Harii; Toshu An; Yosuke Kajiwara; Kazuya Ando; Hiroyasu Nakayama; Tatsuro Yoshino; Eiji Saitoh

doi:10.1063/1.3594661

Frequency dependence of spin pumping in Pt/Y₃Fe ₅O₁₂ film

Kazuya Harii, Toshu An, Yosuke Kajiwara, Kazuya Ando, Hiroyasu Nakayama, Tatsuro Yoshino, Eiji Saitoh

Research output: Contribution to journal › Article

36 Citations (Scopus)

Abstract

The frequency dependence of magnetization precession in spin pumping has been investigated using the inverse spin-Hall effect in a Pt/ Y 3 Fe 5 O 12 bilayer film. We found that the magnitude of a spin current generated by the spin pumping depends weakly on the applied microwave frequency. This weak dependence, which is attributed to the compensation between the frequency change in the spin-pumping cycle and the dynamic magnetic susceptibility, is favorable for making a spin-current-driven microwave demodulator. This behavior is consistent with a model calculation based on the Landau-Lifshitz-Gilbert equation combined with the spin mixing.

Original language	English
Article number	116105
Journal	Journal of Applied Physics
Volume	109
Issue number	11
DOIs	https://doi.org/10.1063/1.3594661
Publication status	Published - 2011 Jun 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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Harii, K., An, T., Kajiwara, Y., Ando, K., Nakayama, H., Yoshino, T., & Saitoh, E. (2011). Frequency dependence of spin pumping in Pt/Y₃Fe ₅O₁₂ film. Journal of Applied Physics, 109(11), [116105]. https://doi.org/10.1063/1.3594661

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AU - Harii, Kazuya

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AU - Ando, Kazuya

AU - Nakayama, Hiroyasu

AU - Yoshino, Tatsuro

AU - Saitoh, Eiji

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AB - The frequency dependence of magnetization precession in spin pumping has been investigated using the inverse spin-Hall effect in a Pt/ Y 3 Fe 5 O 12 bilayer film. We found that the magnitude of a spin current generated by the spin pumping depends weakly on the applied microwave frequency. This weak dependence, which is attributed to the compensation between the frequency change in the spin-pumping cycle and the dynamic magnetic susceptibility, is favorable for making a spin-current-driven microwave demodulator. This behavior is consistent with a model calculation based on the Landau-Lifshitz-Gilbert equation combined with the spin mixing.

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