Wagenhuber, Klaus and Shalygin, Vadim and Niedermeier, Ulrich and Gerl, Christian and Wegscheider, Werner and Korn, Tobias and Schulz, Robert and Schüller, Christian and Ivchenko, Eougenious and Ganichev, Sergey (2007) High spin polarization of optically-oriented trions in p-doped GaAs-AlGaAs quantum wells. AIP Conference Proceedings 893, pp. 439-440.
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We performed cw-photoluminescence (PL) measurements on a 15 nm wide p-doped Al0.3Ga0.7As-GaAs-Al0.3Ga0.7As quantum well structure at low temperatures. By irradiating the sample with circularly polarized light and analyzing the degree of circular polarization of the PL signal, we found a significantly higher degree of spin polarization for charged excitons (trions) than for neutral excitons. Time-resolved pump-probe and Faraday-rotation experiments give an additional information concerning the exciton and trion resonant photoexcitation.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||05 Oct 2007|
|Last Modified:||17 Nov 2009 05:03|
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