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conference paper
Level repulsion of localized excitons in disordered quantum wells
2002
Physica Status Solidi A-Applied Research
The spectral autocorrelation for a set of over 400 near-field photoluminescence spectra of a narrow quantum well has been evaluated. It is compared with a microscopic model of an exciton in a disorder potential. The analysis provides strong evidence for quantum mechanical level repulsion and allows a quantitative estimate of the microscopic disorder features. The concept of participation ratio is invoked to quantify the exciton center-of-mass localization lengths. These turn out to be broadly distributed and increase rapidly with energy.
Type
conference paper
Web of Science ID
WOS:000175657000004
Authors
Publication date
2002
Published in
Physica Status Solidi A-Applied Research
Volume
190
Start page
625
End page
629
Subjects
EPFL units
Event name | Event place | Event date |
MONTPELLIER, FRANCE | SEP 03-07, 2001 | |
Available on Infoscience
September 22, 2009
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