Band-Gap Renormalization in Quasi-Two-Dimensional Systems Induced by Many-Body Electron-Electron and Electron-Phonon Interactions

摘要

Dynamical electron electron and electron phonon interaction corrections to the conduction and valence band edges of photoexcited quasi two dimensional quantum wells are calculated for arbitrary quantum well widths and electron hole densities. Band gap renormalization, when expressed in Rydberg units, is shown to be an approximate universal function of the effective r sub s parameter and the well width. Reprints. (JHD)