Valence band structure of (001), (012), (011), (111), (112), (113) GaAsAlGaAs quantum wells

Abstract

We present a detailed theoretical study of the in-plane dispersion of the spin-orbit coupled valence band of GaAsAlGaAs quantum wells grown along the low-index directions (001), (011), (012), (111), (112) and (113). We find that the confinement energies, warping, effective in-plane masses and hole mixing strongly depend on the direction of confinement. Beside the numerical approach, we have developed a perturbative scheme which is able to predict qualitative trends for confinement energies and in-plane effective masses.