Abstract
We have observed the strong dependence of the in-plane effective masses of the heavy-hole and light-hole valence bands in quantum wells on their coupling. The magnitude of this interaction, which is a function of the energy separation of the two bands, was tuned by adjusting the magnitude of tensile strain and well width in /As quantum wells. A distinct increase of both the heavy- and light-hole masses is observed when the bands merge at k=0, consistent with theoretical predictions.
- Received 1 February 1993
DOI:https://doi.org/10.1103/PhysRevB.47.13926
©1993 American Physical Society