Citation
Je. Golub et al., Observations of interaction-assisted hopping transport in GaAs/Gal(1-x)Al(x)As quantum wells, J LUMINESC, 91(1-2), 2000, pp. 7-12
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LUMINESCENCE
ISSN journal
00222313
→ ACNP
Volume
91
Issue
1-2
Year of publication
2000
Pages
7 - 12
Database
ISI
SICI code
0022-2313(200009)91:1-2<7:OOIHTI>2.0.ZU;2-Q
Abstract
We show that interaction-assisted modes of transport play a role in the ene
rgy relaxation of excitons in disordered GaAs quantum wells. Semitransparen
t gold films are found to induce a blue shift in the photoluminescence spec
trum of disordered wells. We interpret the result in terms of a long-range
electromagnetic hopping coupling suppressed by image dipoles in the gold. T
he results are supported by Monte Carlo simulations of electromagnetically-
assisted exciton hopping using hop rates modified by the gold layer. (C) 20
00 Elsevier Science B.V. All rights reserved.