We calculate the shrinkage of the gaps between the two lowest subbands in a quantum well induced by the presence of a photo-excited electron-hole plasma. The results are reported as a function of well width and plasma concentration. The reduction of the higher gaps is found to be almost as strong as that of the fundamental gap. The contribution of the so called 'off-diagonal' terms is shown to be important.
Title
Subband Renormalization in the Presence of a Dense Electron-Hole Plasma in a Quantum-Well
Published in
Solid State Communications
Volume
80
Issue
7
Pages
473-476
Date
1991
ISSN
0038-1098
Note
Ecole polytech fed lausanne,ph ecublens,inst phys appl,ch-1015 lausanne,switzerland. Bongiovanni, g, univ cagliari,dipartimento sci fis,via osped 72,i-09124 cagliari,italy.
ISI Document Delivery No.: GR863
Cited Reference Count: 16
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Record creation date
2007-08-31
