Abstract
The present theoretical work deals with the relaxation of hot electrons in quantum dots by Coulomb scattering with an electron-hole plasma. A random-phase approximation is used which includes single-particle and collective-plasma excitations. We discuss the influence of the dot size, plasma density, and temperature. The resulting transition rates are of the order of for a plasma density of in As/InP. In the presence of a dense electron-hole plasma, hot electrons can relax efficiently by Auger processes, even in small semiconductor quantum dots where the relaxation by phonon scattering is weak.
- Received 4 August 1992
DOI:https://doi.org/10.1103/PhysRevB.46.15574
©1992 American Physical Society