Journal
PHYSICAL REVIEW B
Volume 76, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.76.241304
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We calculate the lifetime of conduction band excited states in self-assembled quantum dots by taking into account LO-phonon-electron interaction and various anharmonic phonon couplings. We show that polaron relaxation cannot be accurately described by a semiclassical model. The contributions of different anharmonic decay channels are shown to depend strongly on the polaron energy. We calculate the energy dependence of the polaron lifetime and compare our results to available experimental measurements of polaron decay time in InAs/GaAs quantum dots.
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