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All-oxide spin Seebeck effects

酸化物のスピンゼーベック効果

Qiu, Z.*; Hou, D.*; 吉川 貴史*; 内田 健一*; 齊藤 英治

Qiu, Z.*; Hou, D.*; Kikkawa, Takashi*; Uchida, Kenichi*; Saito, Eiji

We report the observation of longitudinal spin Seebeck effects (LSSEs) in an all-oxide bilayer system comprising an IrO$$_2$$ film and an Y$$_3$$Fe$$_5$$O$$_{12}$$ film. Spin currents, which are generated by a temperature gradient across the IrO$$_2$$ $$/$$ Y$$_3$$Fe$$_5$$O$$_{12}$$ interface, were detected as a voltage via the inverse spin Hall effect in the conductive IrO$$_2$$ layer. This voltage is proportional to the magnitude of the temperature gradient; its magnetic field dependence is consistent with the characteristics of LSSEs. This demonstration may lead to the realization of low-cost, stable, transparent spin-current-driven thermoelectric devices.

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パーセンタイル:24.02

分野:Physics, Applied

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