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The effective screening function in Si, Ge, and GaAs and the effects of exchange
Author(s) -
Duggan G.,
Morgan G. J.,
Lettington A.
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.2220940238
Subject(s) - pseudopotential , dielectric function , function (biology) , dielectric , condensed matter physics , interpolation (computer graphics) , materials science , computational physics , physics , optoelectronics , classical mechanics , motion (physics) , evolutionary biology , biology
Abstract Calculations are reported of the effective dielectric function for screening a pseudopotential in Si, Ge, and GaAs. The effects of exchange are also investigated by numerical calculations and an interpolation formula is given which fits the computed values. Screening the exchange interaction results in very small corrections to the effective dielectric function.