Excitonic corrections and band gap renormalization in quantum wires

We present a theoretical analysis of experimental photoluminescence spectra in highly excited semiconductor quantum wires. We show that the inclusion in the theory of electron-hole correlations strongly modifies the shape of emission spectra at any density. We discuss the role of these correlations in the evaluation of the band gap renormalization. The calculated energy- and density-dependence of the broadening agree qualitatively with the experimental results. The broadening is also comparable in magnitude to the band gap renormalization, implying the relevance of a combined self-consistent calculation of the two. (C) 1999 Elsevier Science Ltd. All rights reserved.


Published in:
Solid State Communications, 112, 8, 433-436
Year:
1999
ISSN:
0038-1098
Keywords:
Note:
Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Dept Phys, Inst Theoret Phys, CH-1015 Lausanne, Switzerland. Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Dept Phys, Inst Micro & Optoelect, CH-1015 Lausanne, Switzerland. Scuola Int Super Studi Avanzati, I-34014 Trieste, Italy. Piermarocchi, C, Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Dept Phys, Inst Theoret Phys, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 247KY
Times Cited: 7
Cited Reference Count: 21
Cited References:
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