Spin Hall Magnetoresistance Induced by a Nonequilibrium Proximity Effect

H. Nakayama; M. Althammer; Y. T. Chen; K. Uchida; Y. Kajiwara; D. Kikuchi; T. Ohtani; S. Geprägs; M. Opel; S. Takahashi; R. Gross; G. E.W. Bauer; S. T.B. Goennenwein; E. Saitoh

doi:10.1103/PhysRevLett.110.206601

Spin Hall Magnetoresistance Induced by a Nonequilibrium Proximity Effect

H. Nakayama, M. Althammer, Y. T. Chen, K. Uchida, Y. Kajiwara, D. Kikuchi, T. Ohtani, S. Geprägs, M. Opel, S. Takahashi, R. Gross, G. E.W. Bauer, S. T.B. Goennenwein, E. Saitoh

Research output: Contribution to journal › Article › peer-review

545 Citations (Scopus)

Abstract

We report anisotropic magnetoresistance in Pt|Y₃Fe ₅O₁₂ bilayers. In spite of Y₃Fe ₅O₁₂ being a very good electrical insulator, the resistance of the Pt layer reflects its magnetization direction. The effect persists even when a Cu layer is inserted between Pt and Y₃Fe ₅O₁₂, excluding the contribution of induced equilibrium magnetization at the interface. Instead, we show that the effect originates from concerted actions of the direct and inverse spin Hall effects and therefore call it "spin Hall magnetoresistance."

Original language	English
Article number	206601
Journal	Physical review letters
Volume	110
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.110.206601
Publication status	Published - 2013 May 13

ASJC Scopus subject areas

Physics and Astronomy(all)

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Spin Hall Magnetoresistance Induced by a Nonequilibrium Proximity Effect. / Nakayama, H.; Althammer, M.; Chen, Y. T.; Uchida, K.; Kajiwara, Y.; Kikuchi, D.; Ohtani, T.; Geprägs, S.; Opel, M.; Takahashi, S.; Gross, R.; Bauer, G. E.W.; Goennenwein, S. T.B.; Saitoh, E.

In: Physical review letters, Vol. 110, No. 20, 206601, 13.05.2013.

Research output: Contribution to journal › Article › peer-review

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AU - Kikuchi, D.

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AU - Geprägs, S.

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AU - Takahashi, S.

AU - Gross, R.

AU - Bauer, G. E.W.

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AB - We report anisotropic magnetoresistance in Pt|Y3Fe 5O12 bilayers. In spite of Y3Fe 5O12 being a very good electrical insulator, the resistance of the Pt layer reflects its magnetization direction. The effect persists even when a Cu layer is inserted between Pt and Y3Fe 5O12, excluding the contribution of induced equilibrium magnetization at the interface. Instead, we show that the effect originates from concerted actions of the direct and inverse spin Hall effects and therefore call it "spin Hall magnetoresistance."

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