Abstract
A method is developed for eliminating spurious solutions from eight-band theory. It reduces the bulk dispersion to a cubic equation (quadratic along and , yet gives results virtually indistinguishable from ordinary theory. A unique operator ordering is established for heterostructures, and example calculations on superlattices show good results.
- Received 7 July 1997
DOI:https://doi.org/10.1103/PhysRevB.56.R12748
©1997 American Physical Society