Combined influence of carrier-phonon and Coulomb scattering on the quantum-dot population dynamics

Abstract

We have investigated the impact of the self-consistent coaction of carrier-phonon and Coulomb interactions on the scattering efficiency in a quantum-dot system within a quantum kinetic theory. While there is a substantial effect on the scattering between discrete quantum-dot states due to the interplay of both interactions, the capture of carriers from a wetting layer is only slightly enhanced by the coaction. For the carrier capture due to the electron-phonon interaction, results of the quantum kinetic treatment are compared to those of a perturbative approach. DOI: http://dx.doi.org/10.1103/PhysRevB.87.035301 ©2013 American Physical Society