Published online by Cambridge University Press: 25 February 2011
We perform self-consistent density functional calculations on semiconductor heterojunctions, using ab initio nonlocal pseudopotentials, and derive valence band discontinuities for many different lattice matched interfaces. Spin-orbit effects are included a posteriori. A comparison is made with previous calculations, which used empirical pseudopotentials, and with other heterojunction theories. We find reasonable agreement with reported experimental values, and derive some important conclusions about the nature of the lineups.