Enhancement of the spin pumping efficiency by spin wave mode selection

被引：139

作者：

Sandweg, C. W. ^{[1
,2
]}

Kajiwara, Y. ^{[3
]}

Ando, K. ^{[3
]}

Saitoh, E. ^{[3
,4
,5
,6
]}

Hillebrands, B. ^{[1
,2
]}

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

[2] Tech Univ Kaiserslautern, Forschungszentrum OPTIMAS, D-67663 Kaiserslautern, Germany

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

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

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

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

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 25期

关键词：

All Open Access; Green;

D O I：

10.1063/1.3528207

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spin pumping efficiency of standing spin wave modes in a rectangular Y(3)Fe(5)O(12)/Pt sample has been investigated by means of inverse spin-Hall effect (ISHE). Standing spin waves drive spin pumping, the generation of spin currents from magnetization precession, into the Pt layer which is converted into a detectable voltage due to the ISHE. We discovered that the spin pumping efficiency is significantly higher for standing surface spin waves, hybridized with thickness modes, rather than for volume spin wave modes. The results suggest that the use of higher-mode surface spin waves allows for the fabrication of an efficient spin-current injector. (C) 2010 American Institute of Physics. [doi:10.1063/1.3528207]

引用

页数：3

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