Effect of electron-electron scattering on nonequilibrium transport in quantum-well systems

S. M. Goodnick, P. Lugli

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Abstract

We model nonequilibrium transport in a GaAs-AlxGa1-xAs quantum-well structure using an ensemble Monte Carlo simulation of the full multisubband system in which we include electron-electron (e-e) scattering explicitly into the calculation. The e-e scattering cross section is calculated using the Born approximation and introduced into the transient Monte Carlo simulation via a self-scattering technique. This interaction is found to be especially effective in transferring energy between different subbands, thus thermalizing the carriers within a picosecond. The model described herein is applied to the study of laser-excited carriers in a quantum-well system and to the response of such a system to high parallel electric fields. In the case of laser excitation, e-e interaction may dominate the initial evolution, reducing the cascade of carriers via optical-phonon emission.

Original languageEnglish (US)
Pages (from-to)2578-2588
Number of pages11
JournalPhysical Review B
Volume37
Issue number5
DOIs
StatePublished - Jan 1 1988

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ASJC Scopus subject areas

  • Condensed Matter Physics

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