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Magneto-gyrotropic photogalvanic effects in semiconductor quantum wells

Belkov, Vassilij ; Ganichev, Sergey ; Ivchenko, Eougenious ; Tarasenko, Sergey ; Weber, Wolfgang ; Giglberger, Stephan ; Olteanu, M. ; Tranitz, Hans-Peter ; Danilov, Sergey ; Schneider, Petra ; Wegscheider, Werner ; Weiss, Dieter ; Prettl, Wilhelm
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Date of publication of this fulltext: 11 Jan 2010 13:36


Abstract

We show that free-carrier (Drude) absorption of both polarized and unpolarized terahertz radiation in quantum well (QW) structures causes an electric photocurrent in the presence of an in-plane magnetic field. Experimental and theoretical analysis evidences that the observed photocurrents are spin dependent and related to the gyrotropy of the QWs. Microscopic models for the photogalvanic effects ...

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