Spin-pumping in ferromagnet-normal metal systems

Arne Brataas; Yaroslav Tserkovnyak; Gerrit E.W. Bauer

doi:10.1016/j.jmmm.2003.12.783

Spin-pumping in ferromagnet-normal metal systems

Arne Brataas, Yaroslav Tserkovnyak, Gerrit E.W. Bauer

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

5 Citations (Scopus)

Abstract

Mesoscopic ferromagnet (F)/normal metal (N) structures have recently attracted considerable attention. Slonczewski and Berger proposed that a spin-current may switch the magnetization orientation by means of a "spin-transfer" to the magnetization. We demonstrate that there is also a reverse mechanism: a moving magnetization vector loses angular momentum by emitting a spin-current. We outline the consequences of spin-pumping for (a) the Gilbert damping constant and (b) spin accumulation in adjacent normal metals and semiconductors, in F-N and F-N-F systems.

Original language	English
Pages (from-to)	1981-1982
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	III
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.783
Publication status	Published - 2004 May
Externally published	Yes

Keywords

Ferromagnetic resonance
Gilbert damping
Spin-valve

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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author = "Arne Brataas and Yaroslav Tserkovnyak and Bauer, {Gerrit E.W.}",

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T1 - Spin-pumping in ferromagnet-normal metal systems

AU - Brataas, Arne

AU - Tserkovnyak, Yaroslav

AU - Bauer, Gerrit E.W.

PY - 2004/5

Y1 - 2004/5

N2 - Mesoscopic ferromagnet (F)/normal metal (N) structures have recently attracted considerable attention. Slonczewski and Berger proposed that a spin-current may switch the magnetization orientation by means of a "spin-transfer" to the magnetization. We demonstrate that there is also a reverse mechanism: a moving magnetization vector loses angular momentum by emitting a spin-current. We outline the consequences of spin-pumping for (a) the Gilbert damping constant and (b) spin accumulation in adjacent normal metals and semiconductors, in F-N and F-N-F systems.

AB - Mesoscopic ferromagnet (F)/normal metal (N) structures have recently attracted considerable attention. Slonczewski and Berger proposed that a spin-current may switch the magnetization orientation by means of a "spin-transfer" to the magnetization. We demonstrate that there is also a reverse mechanism: a moving magnetization vector loses angular momentum by emitting a spin-current. We outline the consequences of spin-pumping for (a) the Gilbert damping constant and (b) spin accumulation in adjacent normal metals and semiconductors, in F-N and F-N-F systems.

KW - Ferromagnetic resonance

KW - Gilbert damping

KW - Spin-valve

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VL - 272-276

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EP - 1982

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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