Light and heavy valence subband reversal in GaSb-AlSb superlattices
- 15 August 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 30 (4) , 2276-2278
- https://doi.org/10.1103/physrevb.30.2276
Abstract
We report optical-absorption measurements in high-quality GaSb-AlSb superlattices. The spectra exhibit the two-dimensional density of states and free-exciton peaks. The effect of strain induced by the lattice mismatch is manifested by the anomalous energies of the absorption edges and the reversal of the heavy-and light-hole exciton positions. The data are in good agreement with a simple effective-mass theory.Keywords
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