Exciton-LO-phonon dynamics in InAs/GaAs quantum dots: Effects of zone-edge phonon damping

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The dynamics of an exciton-LO-phonon system after an ultrafast optical excitation in an InAs/GaAs quantum dot is studied theoretically. Influence of anharmonic phonon damping and its interplay with the phonon dispersion is analyzed. The signatures of the zone-edge decay process in the absorption spectrum and time evolution are highlighted, providing a possible way of experimental investigation on phonon anharmonicity effects.
10 pages, 2 figures

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/22901

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0312256
 http://arxiv.org/abs/cond-mat/0312256
 Phys. rev. B 71 (2005) 115309
 doi:10.1103/PhysRevB.71.115309

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arXiv