Linear-response theory of spin Seebeck effect in ferromagnetic insulators

被引：243

作者：

Adachi, Hiroto ^{[1
,2
]}

Ohe, Jun-ichiro ^{[1
,2
]}

Takahashi, Saburo ^{[1
,2
,3
]}

Maekawa, Sadamichi ^{[1
,2
]}

机构：

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

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

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

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 09期

关键词：

FLUCTUATIONS; DIMENSIONS; TRANSPORT; DYNAMICS;

D O I：

10.1103/PhysRevB.83.094410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We formulate a linear response theory of the spin Seebeck effect, i.e., a spin voltage generation from heat current flowing in a ferromagnet. Our approach focuses on the collective magnetic excitation of spins, i.e., magnons. We show that the linear-response formulation provides us with a qualitative as well as quantitative understanding of the spin Seebeck effect observed in a prototypical magnet, yttrium iron garnet.

引用

页数：6

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