Spin pumping by time-dependent gate without magnetic field in a nanowire

ORAL

Abstract

We theoretically study that spin pumping by smooth profile time dependent gate in a Rashba type nanowire without magnetic field.The time dependent gate produces both spin dependent and spin-independent potentials.The spin dependent temporary potential inducing a dynamic Rashba coupling constant combining with the static Rashba coupling constant generate asymmetry spin dependent transmission.Such spin pumping can be enhanced by spin independent temporary potential.

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Authors

  • Lu-Yao Wang

    Dept of physics, Catholic Fu-Jen university, Taiwan

  • Chon-Saar Chu

    Dept. of Electrophysics, National Chiao-Tung university, Taiwan, Department of Electrophysics, National Chiao-Tung University