Self-Consistent Results for a GaAs/Al_xGa_1−xAs Heterojunction. I. Subband Structure and Light-Scattering Spectra

Abstract

The subband structure of a two-dimensional electron system at a GaAs/Al_xGa_1−xAs heterojunction interface is calculated. Many-body exchange and correlation effects are taken into account in the local density-functional approximation. They are shown to be unimportant but not negligibly small. Spectra of light scatterings are also calculated. Results are in reasonable agreement with existing experiments.