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Spectral dependence of spin photocurrent and current-induced spin polarization in an InGaAs/InAlAs two-dimensional electron gas

Authors Yang, CL
He, HT
Ding, L
Cui, LJ
Zeng, YP
Wang, JN
Ge, WK
Issue Date 2006
Source Physical review letters, v. 96, (18), 2006, MAY 12, article number 186605
Summary 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.
ISSN 0031-9007
Language English
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