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KP-approach for non-symmetric short-range defects: resonant states and alloy bandstructure

F. T. Vasko
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Abstract

The short-range defect with reduced symmetry is studied in the framework of KP-approach taking into account a matrix structure of potential energy in the equations for envelope functions. The case of the narrow-gap semiconductor, with defects which are non-symmetric along the [001], [110], or [111] directions, is considered. Resonant state at a single defect is analyzed within the Koster-Slater approximation. The bandstructure modification of the alloy, formed by non-symmetric impurities, is discussed and a generalized virtual crystal approximation is introduced.

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F. T. Vasko. 2002-10-15. KP-approach for non-symmetric short-range defects: resonant states and alloy bandstructure. https://doi.org/10.1002/pssb.200301933

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