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Title: Spectral dependence of spin photocurrent and current-induced spin polarization in an InGaAs/InAlAs two-dimensional electron gas
Authors: Yang, Chunlei
He, H. T.
Ding, Lu
Cui, L. J.
Zeng, Y. P.
Wang, Jiannong
Ge, Wei-Kun
Keywords: Electron spin polarisation
Indium compounds
Gallium arsenide
Aluminium compounds
Two-dimensional electron gas
III-V semiconductors
Spin-orbit interactions
Shubnikov-de Haas effect
Issue Date: 11-May-2006
Citation: Physical review letters, v. 96, 186605 (2006)
Abstract: The converse effects of spin photocurrent and current induced spin polarization are experimentally demonstrated in a two-dimensional electron gas system with Rashba spin splitting. Their consistency with the strength of the Rashba coupling as measured for the same system from beating of the Shubnikov-de Haas oscillations reveals a unified picture for the spin photocurrent, current-induced spin-polarization, and spin-orbit coupling. In addition, the observed spectral inversion of the spin photocurrent indicates a system with dominating structure inversion asymmetry.
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