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Scattering Induced Spin Separation at Zero Bias

Ganichev, Sergey, Belkov, Vassilij, Tarasenko, Sergey, Danilov, Sergey, Giglberger, Stephan, Hoffmann, Christoph, Ivchenko, Eougenious, Weiss, Dieter, Gerl, Christian, Schuh, Dieter, Wegscheider, Werner and Prettl, Wilhelm (2007) Scattering Induced Spin Separation at Zero Bias. AIP Conference Proceedings 893, pp. 1255-1256.

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We show that in gyrotropic semiconductor structures spin-dependent asymmetry of electron scattering induces a spin separation which, in contrast to the spin Hall effect, does not require an electric current to flow. The effect is observed in GaAs/AlGaAs quantum well structures at free-carrier absorption of terahertz (THz) radiation. Microscopic theory based on asymmetry of photoexcitation and relaxation is developed being in a good agreement with experiment.

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Item type:Article
Date:10 April 2007
Institutions:Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
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Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:2135
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