E 0+Δ0 transitions in GaSb/AlSb quantum wells

We have observed optical transitions between the first subbands of the conduction band and the split-off valence band in GaSb/AlSb quantum well structures. The well width dependence of the emission energies is traced to quantization in the conduction band and in the split-off band. By comparison wit...

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Bibliographic Details
Published in:Applied physics letters 1987-01, Vol.50 (4), p.182-184
Main Authors: Forchel, A., Cebulla, U., Tränkle, G., Ziem, U., Kroemer, H., Subbanna, S., Griffiths, G.
Format: Article
Language:English
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Summary:We have observed optical transitions between the first subbands of the conduction band and the split-off valence band in GaSb/AlSb quantum well structures. The well width dependence of the emission energies is traced to quantization in the conduction band and in the split-off band. By comparison with data for the band-edge transitions the effective Δ0 gaps is the quantum wells are determined. Contrary to previous calculations the Δ0 gap energies are almost independent of the well width.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.97655