LUMINESCENCE POLARIZATION AND HOLE SPIN-RELAXATION IN QUANTUM-WELLS

被引：7
|
作者：
BARRAU, J
BACQUET, G
HASSEN, F
LAURET, N
AMAND, T
BROUSSEAU, M
机构：
[1] Laboratoire de Physique des Solides, CNRS, INSA, 31077 Toulouse Cédex, Avenue de Rangueil
来源：
SUPERLATTICES AND MICROSTRUCTURES | 1993年 / 14卷 / 01期
关键词：
D O I：
10.1006/spmi.1993.1099
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report the polarization spectra obtained from strained InxGa1-xAs/GaAs quantum wells. They reflect two important microscopic properties: first, the spin relaxation of the photo-excited holes is incomplete during recombination; second, the spin relaxation of the photo-generated carriers is not affected by the initial electron-hole correlations. We undertake a discussion concerning the relative probabilities of the different hole relaxation processes which leads us to suggest that the prime cause of spin depolarization of photo-generated holes out of k → = 0, is the intra-band hole/acoustic phonon scattering, via piezo-electric coupling. © 1993 Academic Press. All rights reserved.
引用
收藏
页码：27 / 37
页数：11
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