Spin Current Generation and Detection in the Presence of AC Gate

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We predict that in a narrow gap III-V semiconductor quantum well or a wire an observable spin current can be generated with a time dependent gate to modify the Rashba spin-orbit coupling constant. Methods to rectify the so generated AC current are discussed. An all-electric method of spin current detection is suggested, which measures the voltage on the gate in the vicinity of a 2D electron gas carrying a time dependent spin current. Both the generation and detection do not involve any optical or magnetic mediators.
4 pages, 2 figures, final version to be published in Phys. Rev. B

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/20374

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0211559
 http://arxiv.org/abs/cond-mat/0211559
 Phys. Rev. B 68, 233307 (2003)
 doi:10.1103/PhysRevB.68.233307

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arXiv