| Numéro |
Le Journal de Physique IV
Volume 03, Numéro C5, Octobre 1993
Third International Conference on Optics of Excitons in Confined
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|
|---|---|---|
| Page(s) | C5-175 - C5-178 | |
| DOI | https://doi.org/10.1051/jp4:1993532 | |
Third International Conference on Optics of Excitons in Confined
Le Journal de Physique IV 03 (1993) C5-175-C5-178
DOI: 10.1051/jp4:1993532
1 Laboratoire de Physique de la Matière Condensée de l'Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France
2 Dipartimento de Fisica and LENS, Universita di Firenze, Largo E. Fermi 2, 50125 Firenzi, Italy
3 Walter Schottky Institut der TU München, Am Coulombwall, 8046 Garching, Germany
© EDP Sciences 1993
Le Journal de Physique IV 03 (1993) C5-175-C5-178
DOI: 10.1051/jp4:1993532
Electron spin-polarization in p-doped quantum wells
R. FERREIRA1, Ph. ROUSSIGNOL1, P. ROLLAND1, G. BASTARD1, C. DELALANDE1, A. VINATTIERI2 and G. WEIMANN31 Laboratoire de Physique de la Matière Condensée de l'Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France
2 Dipartimento de Fisica and LENS, Universita di Firenze, Largo E. Fermi 2, 50125 Firenzi, Italy
3 Walter Schottky Institut der TU München, Am Coulombwall, 8046 Garching, Germany
Abstract
We study both theoretically and experimentally the luminescence in non-intentionally but heavily p-doped GaAs quantum wells of 55 and 150A width. At T=2K the PL spectra under cw excitation present an excitonic peak and a broad acceptor band. Time-resolved optical pumping of the acceptor line allows us to measure the free electron spin relaxation time. We have investigated its temperature dependence in the 4-40K range. The experimental findings are interpreted in the framework of the D'Yakonov-Perel' mechanism for the electron gas.
© EDP Sciences 1993