Optimum condition for spin-current generation from magnetization precession in thin film systems

K. Ando; T. Yoshino; E. Saitoh

doi:10.1063/1.3119314

Optimum condition for spin-current generation from magnetization precession in thin film systems

K. Ando, T. Yoshino, E. Saitoh

Department of Applied Physics and Physico-Informatics

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

82 Citations (Scopus)

Abstract

The generation efficiency of spin currents induced by a magnetization-precession motion in a thin film system has been investigated in terms of a magnetization-precession trajectory. By using the Landau-Lifshitz-Gilbert equation combined with the phenomenological model of the spin pumping, the generation efficiency is calculated to be equal to the elliptical orbit area of magnetization precession, which is maximized when the precession trajectory is distorted. This calculation well reproduces experimental results on the magnetization-angle dependence of the inverse spin-Hall signal induced by the spin pumping in a Ni81 Fe19 /Pt bilayer film.

Original language	English
Article number	152509
Journal	Applied Physics Letters
Volume	94
Issue number	15
DOIs	https://doi.org/10.1063/1.3119314
Publication status	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3119314

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title = "Optimum condition for spin-current generation from magnetization precession in thin film systems",

abstract = "The generation efficiency of spin currents induced by a magnetization-precession motion in a thin film system has been investigated in terms of a magnetization-precession trajectory. By using the Landau-Lifshitz-Gilbert equation combined with the phenomenological model of the spin pumping, the generation efficiency is calculated to be equal to the elliptical orbit area of magnetization precession, which is maximized when the precession trajectory is distorted. This calculation well reproduces experimental results on the magnetization-angle dependence of the inverse spin-Hall signal induced by the spin pumping in a Ni81 Fe19 /Pt bilayer film.",

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

note = "Funding Information: The authors thank S. Maekawa, S. Takahashi, and J. Ieda for valuable discussions. This work was supported by a Grant-in-Aid for Scientific research in Priority Area “Creation and control of spin current”, Scientific Research A, and by Global COE Program “High-Level Global Cooperation for Leading-Edge Platform on Access Spaces (C12)” from MEXT.",

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doi = "10.1063/1.3119314",

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T1 - Optimum condition for spin-current generation from magnetization precession in thin film systems

AU - Ando, K.

AU - Yoshino, T.

AU - Saitoh, E.

N1 - Funding Information: The authors thank S. Maekawa, S. Takahashi, and J. Ieda for valuable discussions. This work was supported by a Grant-in-Aid for Scientific research in Priority Area “Creation and control of spin current”, Scientific Research A, and by Global COE Program “High-Level Global Cooperation for Leading-Edge Platform on Access Spaces (C12)” from MEXT.

PY - 2009

Y1 - 2009

N2 - The generation efficiency of spin currents induced by a magnetization-precession motion in a thin film system has been investigated in terms of a magnetization-precession trajectory. By using the Landau-Lifshitz-Gilbert equation combined with the phenomenological model of the spin pumping, the generation efficiency is calculated to be equal to the elliptical orbit area of magnetization precession, which is maximized when the precession trajectory is distorted. This calculation well reproduces experimental results on the magnetization-angle dependence of the inverse spin-Hall signal induced by the spin pumping in a Ni81 Fe19 /Pt bilayer film.

AB - The generation efficiency of spin currents induced by a magnetization-precession motion in a thin film system has been investigated in terms of a magnetization-precession trajectory. By using the Landau-Lifshitz-Gilbert equation combined with the phenomenological model of the spin pumping, the generation efficiency is calculated to be equal to the elliptical orbit area of magnetization precession, which is maximized when the precession trajectory is distorted. This calculation well reproduces experimental results on the magnetization-angle dependence of the inverse spin-Hall signal induced by the spin pumping in a Ni81 Fe19 /Pt bilayer film.

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Optimum condition for spin-current generation from magnetization precession in thin film systems

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