Inverse spin-Hall effect induced by spin pumping in metallic system

被引：443

作者：

Ando, K. ^{[1
]}

Takahashi, S. ^{[1
,2
]}

Ieda, J. ^{[2
,3
]}

Kajiwara, Y. ^{[1
]}

Nakayama, H. ^{[1
]}

Yoshino, T. ^{[1
]}

Harii, K. ^{[1
]}

Fujikawa, Y. ^{[1
]}

Matsuo, M. ^{[3
,4
]}

Maekawa, S. ^{[2
,3
]}

Saitoh, E. ^{[1
,2
,3
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

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

[3] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[4] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 10期

关键词：

ROOM-TEMPERATURE; SPINTRONICS; ELECTRONICS; RESONANCE;

D O I：

10.1063/1.3587173

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The inverse spin-Hall effect (ISHE) induced by the spin pumping has been investigated systematically in simple ferromagnetic/paramagnetic bilayer systems. The spin pumping driven by ferromagnetic resonance injects a spin current into the paramagnetic layer, which gives rise to an electromotive force transverse to the spin current using the ISHE in the paramagnetic layer. In a Ni81Fe19/Pt film, we found an electromotive force perpendicular to the applied magnetic field at the ferromagnetic resonance condition. The spectral shape of the electromotive force is well reproduced using a simple Lorentz function, indicating that the electromotive force is due to the ISHE induced by the spin pumping; extrinsic magnetogalvanic effects are eliminated in this measurement. The electromotive force varies systematically by changing the microwave power, magnetic-field angle, and film size, being consistent with the prediction based on the Landau-Lifshitz-Gilbert equation combined with the models of the ISHE and spin pumping. The electromotive force was observed also in a Pt/Y3Fe4GaO12 film, in which the metallic Ni81Fe19 layer is replaced by an insulating Y3Fe4GaO12 layer, supporting that the spin-pumping-induced ISHE is responsible for the observed electromotive force. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3587173]

引用

页数：11

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