Polarons in semiconductor quantum-dots and their role in the quantum kinetics of carrier relaxation

Details Polarons in semiconductor quantum-dots and their role in the quantum kinetics of carrier relaxation Polarons in semiconductor quantum-dots and their role in the quantum kinetics of carrier relaxation

2004-06-23

arxiv.org/abs/cond-mat/0406563v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures, accepted for publication in Phys.Rev.B

Scientific paper

10.1103/PhysRevB.71.125327

While time-dependent perturbation theory shows inefficient carrier-phonon scattering in semiconductor quantum dots, we demonstrate that a quantum kinetic description of carrier-phonon interaction predicts fast carrier capture and relaxation. The considered processes do not fulfill energy conservation in terms of free-carrier energies because polar coupling of localized quantum-dot states strongly modifies this picture.

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