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Monopolar Optical Orientation of Electronic Spins in Semiconductors

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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 due to intraband (Drude-like) transitions in n-type bulk semiconductors and due to intra-subband or inter-subband transitions in quantum well (QW) structures results in a monopolar spin orientation of free electrons. Spin polarization in zinc-blende-structure based QWs is demonstrated by the observation of the spin-galvanic ...


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