Electronic structure of the valence band of the II--VI wide band gap binary/ternary alloy interfaces

Details Electronic structure of the valence band of the II--VI wide band gap binary/ternary alloy interfaces Electronic structure of the valence band of the II--VI wide band gap binary/ternary alloy interfaces

1996-09-20

arxiv.org/abs/cond-mat/9609196v1

Physics

Condensed Matter

17 pages in RevTex, four PostScript figures. also available at http://www.fis.cinvestav.mx/~daniel/PUBS/pub10.uu or request to

Scientific paper

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.

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