Theory of spin Hall magnetoresistance

被引：695

作者：

Chen, Yan-Ting ^{[1
]}

Takahashi, Saburo ^{[2
]}

Nakayama, Hiroyasu ^{[2
]}

Althammer, Matthias ^{[3
,4
]}

Goennenwein, Sebastian T. B. ^{[3
]}

Saitoh, Eiji ^{[2
,5
,6
,7
]}

Bauer, Gerrit E. W. ^{[1
,2
,5
]}

机构：

[1] Delft Univ Technol, Kavli Inst NanoSci, NL-2628 CJ Delft, Netherlands

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

[3] Bayer Akad Wissensch, Walther Meissner Inst, D-85748 Garching, Germany

[4] Univ Alabama, Dept Chem, Ctr Mat Informat Technol MINT, Tuscaloosa, AL 35487 USA

[5] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[6] Japan Sci & Technol Agcy, CREST, Tokyo 1020076, Japan

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

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 14期

关键词：

SPINTRONICS; INTERFACE; INSULATOR; TORQUE;

D O I：

10.1103/PhysRevB.87.144411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a theory of the spin Hall magnetoresistance (SMR) in multilayers made from an insulating ferromagnet F, such as yttrium iron garnet (YIG), and a normal metal N with spin-orbit interactions, such as platinum (Pt). The SMR is induced by the simultaneous action of spin Hall and inverse spin Hall effects and therefore a nonequilibrium proximity phenomenon. We compute the SMR in F vertical bar N and F vertical bar N vertical bar F layered systems, treating N by spin-diffusion theory with quantum mechanical boundary conditions at the interfaces in terms of the spin-mixing conductance. Our results explain the experimentally observed spin Hall magnetoresistance in N vertical bar F bilayers. For F vertical bar N vertical bar F spin valves we predict an enhanced SMR amplitude when magnetizations are collinear. The SMR and the spin-transfer torques in these trilayers can be controlled by the magnetic configuration. DOI: 10.1103/PhysRevB.87.144411

引用

页数：9

共 32 条

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