| Numéro |
J. Phys. Colloques
Volume 48, Numéro C5, Novembre 1987
3rd International Conference on Modulated Semiconductor Structures
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|---|---|---|
| Page(s) | C5-403 - C5-406 | |
| DOI | https://doi.org/10.1051/jphyscol:1987586 | |
3rd International Conference on Modulated Semiconductor Structures
J. Phys. Colloques 48 (1987) C5-403-C5-406
DOI: 10.1051/jphyscol:1987586
1 4. Physik Institut, Universität Stuttgart, D-7000 Stuttgart-80, F.R.G.
2 Forschungsinstitut der Deutschen Bundespost, D-6100 Darmstadt, F.R.G.
J. Phys. Colloques 48 (1987) C5-403-C5-406
DOI: 10.1051/jphyscol:1987586
SPECTROSCOPIC INVESTIGATION OF THE SUBBAND EDGE RENORMALIZATION IN ELECTRON-HOLE PLASMAS IN GaAs/GaAlAs QUANTUM WELLS
E. LACH1, G. TRÄNKLE1, A. FORCHEL1 et G. WEIMANN21 4. Physik Institut, Universität Stuttgart, D-7000 Stuttgart-80, F.R.G.
2 Forschungsinstitut der Deutschen Bundespost, D-6100 Darmstadt, F.R.G.
Abstract
In quasi-two-dimensional GaAs/GaAlAs multiple quantum well structures we have investigated the renormalization of the different subband edges due to many-body effects in electron-hole plasmas. We observe a rigid shift of all subbands to lower energy with increasing total carrier density independent of the density in a particular subband. Correlation interactions lift the independence of the subbands and trace the band renormalization to the total plasma density.