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Magneto-gyrotropic photogalvanic effects in semiconductor quantum wells

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Belkov, Vassilij ; Ganichev, Sergey ; Ivchenko, Eougenious ; Tarasenko, Sergey ; Weber, Wolfgang ; Giglberger, Stephan ; Olteanu, M. ; Tranitz, H. ; Danilov, Sergey ; Schneider, Petra ; Wegscheider, Werner
Date of publication of this fulltext: 05 Aug 2009 13:36


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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