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Conversion of Spin into Directed Electric Current in Quantum Wells

Ganichev, Sergey ; Ivchenko, Eougenious ; Danilov, Sergey ; Eroms, Jonathan ; Wegscheider, Werner ; Weiss, Dieter ; Prettl, Wilhelm
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Date of publication of this fulltext: 08 Feb 2010 13:29


Abstract

A nonequilibrium population of spin-up and spin-down states in quantum well structures has been achieved applying circularly polarized radiation. The spin polarization results in a directed motion of free carriers in the plane of a quantum well perpendicular to the direction of light propagation. Because of the spin selection rules the direction of the current is determined by the helicity of the ...

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