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Influence of acoustic phonons on dephasing of free excitons in quantum wells

โœ Scribed by I.-K. Oh; Jai Singh

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
293 KB
Volume
30
Category
Article
ISSN
0749-6036

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โœฆ Synopsis

A theory of the dephasing rate of quasi-2D free excitons due to acoustic phonon interaction at low exciton densities is presented. Both deformation potential and piezoelectric couplings are considered for the exciton-phonon interaction in quantum wells. Using the derived interaction Hamiltonian obtained recently by us, exciton linewidth and dephasing rate are calculated as a function of the exciton density, exciton temperature, exciton momentum and lattice temperature.

๐Ÿ“œ SIMILAR VOLUMES

Formation of excitons from free electron
Formation of excitons from free electronโ€“hole pairs due to acoustic phonon interactions in quantum wells
โœ I.-K. Oh; Jai Singh ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 168 KB

A study of the process of exciton formation due to acoustic phonon interaction in quantum wells (QWs) is presented. Considering that excitons are formed from photoexcited free electron-hole pairs, we have derived the rate of such formation as a function of density and temperature of charge carriers