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Current-induced spin polarization at a single heterojunction

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6 Author(s)
Silov, A.Yu. ; COBRA Inter-University Research Institute, Eindhoven University of Technology, PO Box 513, NL-5600 MB Eindhoven, The Netherlands ; Blajnov, P.A. ; Wolter, J.H. ; Hey, R.
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We have experimentally achieved spin polarization by a lateral current in a single nonmagnetic semiconductor heterojunction. The effect does not require an applied magnetic field. The current-induced spin orientation can be seen as the inverse of the circular photogalvanic effect (also often referred to as spin photocurrents): the nonequilibrium spin changes its sign as the current reverses.

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Applied Physics Letters  (Volume:85 ,  Issue: 24 )