Theory of spin Hall magnetoresistance

Chen, Yan-Ting; Takahashi, Saburo; Nakayama, Hiroyasu; Althammer, Matthias; Goennenwein, Sebastian T. B.; Saitoh, Eiji; Bauer, Gerrit E. W.

Theory of spin Hall magnetoresistance

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Datum

2013

Autor:innen

Chen, Yan-Ting

Takahashi, Saburo

Nakayama, Hiroyasu

Althammer, Matthias

Goennenwein, Sebastian T. B.

Saitoh, Eiji

Bauer, Gerrit E. W.

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. American Physical Society (APS). 2013, 87(14), 144411. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.87.144411

Zusammenfassung

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|N and F|N|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|F bilayers. For F|N|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.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

CHEN, Yan-Ting, Saburo TAKAHASHI, Hiroyasu NAKAYAMA, Matthias ALTHAMMER, Sebastian T. B. GOENNENWEIN, Eiji SAITOH, Gerrit E. W. BAUER, 2013. Theory of spin Hall magnetoresistance. In: Physical Review B. American Physical Society (APS). 2013, 87(14), 144411. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.87.144411

BibTex

@article{Chen2013-02-06T13:04:33ZTheor-52435,
  year={2013},
  doi={10.1103/PhysRevB.87.144411},
  title={Theory of spin Hall magnetoresistance},
  number={14},
  volume={87},
  issn={2469-9950},
  journal={Physical Review B},
  author={Chen, Yan-Ting and Takahashi, Saburo and Nakayama, Hiroyasu and Althammer, Matthias and Goennenwein, Sebastian T. B. and Saitoh, Eiji and Bauer, Gerrit E. W.},
  note={Article Number: 144411}
}

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