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- Title
Observation of Exchange Interaction Effects under Optical Orientation of Excitons in AlGaAs.
- Authors
Efanov, A. V.; Zhuravlev, K. S.; Shamirzaev, T. S.; Kellner, W.; Pasher, H.
- Abstract
Exciton luminescence in AlGaAs layers is studied under interband excitation by circularly polarized light. Curves of luminescence depolarization in a transverse magnetic field (Hanle effect) exhibit peaks arranged symmetrically about a point H = 0. It is shown that this effect is attributable to crossings of fine-structure levels in the magnetic field. The exchange splitting of bulk exciton levels and also recombination and spin-relaxation times are determined from a comparison between theoretical and experimental dependences.
- Subjects
LUMINESCENCE; EXCITON theory; MAGNETIC fields
- Publication
JETP Letters, 2003, Vol 77, Issue 10, p561
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1595696