
Accession Number : AD0646998
Title : PSEUDOPOTENTIAL THEORY OF EXCITON AND IMPURITY STATES,
Corporate Author : CHICAGO UNIV ILL
Personal Author(s) : Hermanson,J. ; Phillips,J. C.
Report Date : 1966
Pagination or Media Count : 37
Abstract : A formalism for studying central cell corrections to the effective mass equation is presented. A generalized impurity equation for excitons and impurity states is derived, including the effects of dielectric response and largek variation of the effective mass. Because of the presence of interband matrix elements of the impurity potential in the general case, this equation is not easily solved. By transforming to a representation in which the core parts of Bloch functions are removed a pseudowave equation is developed. In this equation the effective impurity potential is substantially cancelled within the central cell, so that interband matrix elements are sharply reduced, and the usual oneband approximation is valid. (Author)
Descriptors : (*CRYSTAL DEFECTS, POTENTIAL THEORY), (*EXCITONS, POTENTIAL THEORY), IMPURITIES, CRYSTAL LATTICES, EQUATIONS, BAND THEORY OF SOLIDS, SEMICONDUCTORS, DIELECTRICS, WAVE FUNCTIONS
Subject Categories : Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE