Spin Current Generation and Detection in the Presence of AC Gate

Details Spin Current Generation and Detection in the Presence of AC Gate Spin Current Generation and Detection in the Presence of AC Gate

2002-11-25

arxiv.org/abs/cond-mat/0211559v2

Phys. Rev. B 68, 233307 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, final version to be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.68.233307

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.

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