Measurement of spin current using spin relaxation modulation induced by spin injection

被引：17

作者：

Ando, K. ^{[1
]}

Nakayama, H. ^{[1
]}

Kajiwara, Y. ^{[1
]}

Kikuchi, D. ^{[1
]}

Sasage, K. ^{[1
]}

Uchida, K. ^{[1
]}

Ikeda, K. ^{[1
]}

Saitoh, E. ^{[1
,2
]}

机构：

[1] Keio Univ, Dept Appl Phys & Physicoinformat, Yokohama, Kanagawa 2238522, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Tokyo 1020075, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 07期

关键词：

SPINTRONICS;

D O I：

10.1063/1.3063081

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ferromagnetic resonance spectra affected by the spin-Hall effect (SHE) and the spin torque were measured for a Ni(81)Fe(19)/Pd bilayer film. A charge current applied to the Pd layer is converted into a spin current via SHE, which propagates into the Ni(81)Fe(19) layer through the interface as a spin current. The spin current exerts the torque on the magnetization, modulating the spin relaxation in the Ni(81)Fe(19) layer. By monitoring the spin relaxation modulation, we estimated the spin current amplitude injected into the Ni(81)Fe(19) layer. This method enables the quantitative measurement of spin currents without assuming any microscopic material parameters. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3063081]

引用

页数：3

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