Spin relaxation of negatively charged excitons in CdTe quantum wells

We investigate the spin relaxation of negatively charged excitons in modulation-doped CdTe quantum wells by time-resolved photoluminescence. The charged exciton spin flip process is found to be very sensitive to the excitation energy but not to a change of electron concentration. We exclude the Bir-Aronov-Pikus mechanism, which is based on the exchange interaction, as responsible for the X- spin flip.


Published in:
Physica Status Solidi B-Basic Research, 229, 2, 627-631
Year:
2002
ISSN:
0370-1972
Keywords:
Note:
Swiss Fed Inst Technol, Dept Phys, EPFL, CH-1015 Lausanne, Switzerland. Warsaw Univ, Inst Expt Phys, Warsaw, Poland. Polish Acad Sci, Inst Phys, Warsaw, Poland. Ciulin, V, Swiss Fed Inst Technol, Dept Phys, EPFL, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 520WL
Times Cited: 7
Cited Reference Count: 12
Cited References:
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