  We present an electronic structure calculation of the valence band for some
II--VI binary/ternary alloy interfaces. We use the empirical tight-binding
method and the surface Green's function matching method. For the ternary alloys
we use our previously set Hamiltonians they describe well the band gap change
with composition obtained experimentally. At the interface domain, we find
three non-dispersive and two interface states besides the known bulk bands. The
non-dispersive states are reminiscent of the ones already obtained
experimentally as well as theoretically, in (001)-oriented surfaces. We make
use of the available theoretical calculations for the (001)-oriented surfaces
of the binary compounds and for the binary/binary interfaces to compare our new
results with.
