Nonlinear spin pumping induced by parametric excitation

K. Ando; T. An; E. Saitoh

doi:10.1063/1.3633348

Nonlinear spin pumping induced by parametric excitation

K. Ando, T. An, E. Saitoh

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

36 Citations (Scopus)

Abstract

Spin pumping driven by parametric spin excitation was observed in a Pt/La:Y₃Fe₅O₁₂ film. We applied microwave with doubled frequency of the ferromagnetic resonance and detected a spin current emitted from the La:Y₃Fe₅O₁₂ layer using the inverse spin-Hall effect (ISHE) in the Pt layer. In the ISHE signal, we found nonlinear dependence and threshold with respect to applied microwave power, demonstrating that the spin current generation is due to nonlinear coupling between microwave and spin dynamics. These results will be essential for developing active elements in spin current circuits.

Original language	English
Article number	092510
Journal	Applied Physics Letters
Volume	99
Issue number	9
DOIs	https://doi.org/10.1063/1.3633348
Publication status	Published - 2011 Aug 29
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3633348

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title = "Nonlinear spin pumping induced by parametric excitation",

abstract = "Spin pumping driven by parametric spin excitation was observed in a Pt/La:Y3Fe5O12 film. We applied microwave with doubled frequency of the ferromagnetic resonance and detected a spin current emitted from the La:Y3Fe5O12 layer using the inverse spin-Hall effect (ISHE) in the Pt layer. In the ISHE signal, we found nonlinear dependence and threshold with respect to applied microwave power, demonstrating that the spin current generation is due to nonlinear coupling between microwave and spin dynamics. These results will be essential for developing active elements in spin current circuits.",

author = "K. Ando and T. An and E. Saitoh",

note = "Funding Information: This work was supported by a Strategic Information and Communications R&D Promotion Program from MIC (102102001), Japan, the Cabinet Office, Government of Japan through its “Funding Program for Next Generation World-Leading Researchers,” a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” (19048028) from MEXT, Japan, the Sumitomo Foundation, Japan, and the Casio Foundation, Japan. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "2011",

month = aug,

day = "29",

doi = "10.1063/1.3633348",

language = "English",

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T1 - Nonlinear spin pumping induced by parametric excitation

AU - Ando, K.

AU - An, T.

AU - Saitoh, E.

N1 - Funding Information: This work was supported by a Strategic Information and Communications R&D Promotion Program from MIC (102102001), Japan, the Cabinet Office, Government of Japan through its “Funding Program for Next Generation World-Leading Researchers,” a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” (19048028) from MEXT, Japan, the Sumitomo Foundation, Japan, and the Casio Foundation, Japan. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2011/8/29

Y1 - 2011/8/29

N2 - Spin pumping driven by parametric spin excitation was observed in a Pt/La:Y3Fe5O12 film. We applied microwave with doubled frequency of the ferromagnetic resonance and detected a spin current emitted from the La:Y3Fe5O12 layer using the inverse spin-Hall effect (ISHE) in the Pt layer. In the ISHE signal, we found nonlinear dependence and threshold with respect to applied microwave power, demonstrating that the spin current generation is due to nonlinear coupling between microwave and spin dynamics. These results will be essential for developing active elements in spin current circuits.

AB - Spin pumping driven by parametric spin excitation was observed in a Pt/La:Y3Fe5O12 film. We applied microwave with doubled frequency of the ferromagnetic resonance and detected a spin current emitted from the La:Y3Fe5O12 layer using the inverse spin-Hall effect (ISHE) in the Pt layer. In the ISHE signal, we found nonlinear dependence and threshold with respect to applied microwave power, demonstrating that the spin current generation is due to nonlinear coupling between microwave and spin dynamics. These results will be essential for developing active elements in spin current circuits.

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Nonlinear spin pumping induced by parametric excitation

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