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Theory of local electronic states in a semi‐infinite mixed crystal
Author(s) -
Ueba H.,
Ichimura S.
Publication year - 1979
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220920136
Subject(s) - crystal (programming language) , wave function , local density of states , infinity , condensed matter physics , physics , state (computer science) , electronic structure , function (biology) , quantum mechanics , mathematics , mathematical analysis , computer science , algorithm , programming language , evolutionary biology , biology
A theory is presented to study the local electronic states in a semi‐infinite mixed crystal, by extending the coherent potential approximation developed in the study of an infinite bulk crystal to a suitable one for a semi‐infinite crystal. The effect of semi‐infinity of a crystal is taken into account by Sugakov's method in which the wave function of an electron is expressed in terms of a standing wave with nodes. The site‐dependent coherent potentials are introduced to calculate the local density of states in a semi‐infinite mixed crystal. The appearance of the localized surface state is also discussed.