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Optical spin orientation under inter- and intra-subband transitions in QWs

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Tarasenko, Sergey ; Ivchenko, Eougenious ; Belkov, Vassilij ; Ganichev, Sergey ; Schowalter, Dieter ; Schneider, Petra ; Sollinger, M. ; Prettl, Wilhelm ; Ustinov, V. ; Zhukov, A. ; Vorobjev, L.
Date of publication of this fulltext: 05 Aug 2009 13:37


It is shown that absorption of circularly polarized infrared radiation achieved by inter-subband and intra-subband (Drude-like) transitions results in a monopolar spin orientation of free carriers. The monopolar spin polarization in zinc-blende-based quantum wells (QWs) is demonstrated by the observation of the spin-galvanic and circular photogalvanic effects. It is shown that monopolar spin ...


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