Hot phonon effects on electron high-field transport in GaAs

Abstract

An original ensemble Monte Carlo technique for hot phonon problems is applied for the simulation of anisotropic nonequilibrium phonon distributions in momentum space. The dynamics of the coupled nonequilibrium electron-LO-phonon system in electric fields are simulated within the realistic three-valley model of GaAs. Hot phonon effects on the transient and steady-state high-field electron transport as well as on the relaxation of electrically heated electrons are obtained and investigated under various conditions.