Large valence-band nonparabolicity and tailorable hole masses in strained-layer superlattices

Abstract

The two-dimensional, strain-induced light-hole masses in InGaAs strained-layer superlattices are shown to have large nonparabolicity contributions. Calculated hole masses agree with experimental values to within the 20% scatter. The results indicate that these tailorable hole masses could be useful tools for studying two-dimensional valence transport.