Electronic Raman Scattering in Quantum Wells

Using a generalized self-consistent field theory we have investigated the electronic resonant Raman scattering process in modulation-doped GaAs-AlGaAs single quantum wells. Charge- and spin-density excitations spectra were calculated varying the width of the well as well as the density of the electron gas. In the low density regime, we observed the collapse of Hartree term of charge-density excitations as found experimentally by Ernst et al. [1]. Concerning the resonance with the incomming laser light, we predict the existence of high energy excitations which are connected with excited states of the quantum wells.