Plasmon mechanism of the trion emission band broadening in quantum wells
Résumé
The effects of charge-density fluctuations on negative trion states in a quantum well are considered for the case of intermediate doping by electrons at zero magnetic field. The quasi-two-dimensionality of the system and the trion-plasmon interaction are taken into account in the framework of the random-phase approximation. It is shown that the trion luminescence band has a complex structure consisting of a zero-plasmon line and a trion-plasmon wing. The structure is interpreted as a result of spatial inhomogeneity of the quantum wells.
Domaines
Autre [cond-mat.other]
Origine : Fichiers éditeurs autorisés sur une archive ouverte
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