Electronic surface states in semiconductor superlattices: The case of a triple-constituent superlattice

For the first time a calculation is made for the dispersion relations of electronic surface states of triple-constituent semiconductor superlattices, within the framework of an analytical model of interaction. An application is presented for a GaSb/AlSb/InAs polytype superlattice. We show that a new electronic surface transition occurs which is associated with In-derived surface states.