Kowalik-Seidl, K. and Voegele, X. P. and Rimpfl, B. N. and Manus, S. and Kotthaus, J. P. and Schuh, D. and Wegscheider, W. and Holleitner, A. W. (2010) Long exciton spin relaxation in coupled quantum wells. APPLIED PHYSICS LETTERS, 97 (1): 011104. ISSN 0003-6951, 1077-3118
Full text not available from this repository. (Request a copy)Abstract
Spatially indirect excitons in a coupled quantum well structure were studied by means of polarization and time-resolved photoluminescence. A strong degree of circular polarization (>50%) in emission was achieved when the excitation energy was tuned into resonance with the direct exciton state. The indirect transition remained polarized several tens of nanoseconds after the pumping laser pulse, demonstrating directly a very long relaxation time of exciton spin. The observed spin relaxation time exceeds the radiative lifetime of the indirect excitons. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3458703]
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LIFETIMES; DYNAMICS; STORAGE; carrier relaxation time; excited states; excitons; photoluminescence; polarisation; radiative lifetimes; semiconductor quantum wells; time resolved spectra |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Jul 2020 15:01 |
| Last Modified: | 22 Jul 2020 15:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24468 |
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