Dynamics of charged excitons in GaAs quantum wells under high magnetic field

We report on time-resolved photoluminescence studies of charged and neutral excitons in a modulation doped GaAs quantum well under resonant excitation and high magnetic field. The radiative lifetime of the charged exciton is rather short, 60 ps at zero held, and is found to increase by a factor of similar to 2 up to 7 T. The short lifetimes suggest that, under magnetic field, the exciton bound in the trion is delocalized. (C) 1998 Elsevier Science B.V. All rights reserved.


Published in:
Physica B, 258, 1-2, 466-469
Year:
1998
ISSN:
0921-4526
Keywords:
Note:
Swiss Fed Inst Technol, Inst Micro & Optoelect, Dept Phys, CH-1015 Lausanne, Switzerland. Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel. Ciulin, V, Swiss Fed Inst Technol, Inst Micro & Optoelect, Dept Phys, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 152KE
Times Cited: 0
Cited Reference Count: 15
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