Summary
We consider in this work the scattering of low-energy excitons in single 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 particles with large kinetic energy. The second part is devoted to the inelastic scatterings of individual excitons by a phonon reservoir. We discuss in particular the validity of the elastic approximation, which is well known to be very accurate for particles with large kinetic energy.
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Ferreira, R. Scattering and relaxation of low-energy excitons in quantum wells. Il Nuovo Cimento D 17, 1229–1237 (1995). https://doi.org/10.1007/BF02457194
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DOI: https://doi.org/10.1007/BF02457194