SCATTERING AND RELAXATION OF LOW-ENERGY EXCITONS IN QUANTUM-WELLS

Authors
FERREIRA R
Citation
R. Ferreira, SCATTERING AND RELAXATION OF LOW-ENERGY EXCITONS IN QUANTUM-WELLS, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 17(11-12), 1995, pp. 1229-1237
Citations number
15
Categorie Soggetti
Physics
Journal title
Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics → ACNP
ISSN journal
03926737
Volume
17
Issue
11-12
Year of publication
1995
Pages
1229 - 1237
Database
ISI
SICI code
0392-6737(1995)17:11-12<1229:SAROLE>2.0.ZU;2-#
Abstract
We consider in this work the scattering of low-energy excitons in sing le quantum wells. In the first part we consider the elastic scattering by a static centre (charged impurity) and discuss the validity of the first Born approximation, which is expected to work well only for par ticles with large kinetic energy. The second part is devoted to the in elastic scatterings of individual excitons by a phonon reservoir. We d iscuss in particular the validity of the elastic approximation, which is well known to be very accurate for particles with large kinetic ene rgy.