Band lineup at hexagonal Si${}_x$Ge${}_{1-x}$/Si${}_y$Ge${}_{1-y}$ alloy interfaces

Abderrezak Belabbes, Silvana Botti, Friedhelm Bechstedt

The natural and true band profiles at heterojunctions formed by hexagonal Si${}_x$Ge${}_{1-x}$ alloys are investigated by a variety of methods: density functional theory for atomic geo…