Interface Energy Spectrum of Real PbTe/SnTe Heterojunction
V.I. Litvinov
Institute of Material Science Problems, Ukr. Acad. Sci., Krasnoarmeyskaya 60-63, 274029 Chernovtsy, Ukraine

and M. Oszwałdowski
Institute of Physics, Technical University of Poznań, Piotrowo 3, 60-965 Poznań, Poland
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The interface energy spectrum in real band-inverted PbTe/SnTe heterojunctions formed both in the (111) and (001) planes is calculated. It is shown that even if the valence band of SnTe lies above the conduction band minimum of PbTe, the interface, midgap states may still exist due to the strain effect on the band gaps.
DOI: 10.12693/APhysPolA.82.805
PACS numbers: 73.40.Lq, 71.50.+t