Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect

arxiv: 1211.0098 · v1 · pith:XEWDNUZ2new · submitted 2012-11-01 · ❄️ cond-mat.mtrl-sci · cond-mat.mes-hall

Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect

H. Nakayama , M. Althammer , Y.-T. Chen , K. Uchida , Y. Kajiwara , D. Kikuchi , T. Ohtani , S. Gepr\"ags

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M. Opel S. Takahashi R. Gross G. E. W. Bauer S. T. B. Goennenwein E. Saitoh

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classification ❄️ cond-mat.mtrl-sci cond-mat.mes-hall

keywords effecthallmagnetoresistancespiny3fe5o12inducedlayermagnetization

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We report anisotropic magnetoresistance in Pt|Y3Fe5O12 bilayers. In spite of Y3Fe5O12 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 Y3Fe5O12, 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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Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect

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