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Local-Field and Exchange-Correlation Effects in Optical Spectra of Wide-Band–Gap Semiconductors

Published online by Cambridge University Press:  15 February 2011

V. I. Gavrilenko  and
F. Bechstedt
V. I. Gavrilenko
Affiliation:
Friedrich-Schiller-Universität, IFTO, Max-Wien-Platz 1, D-07743 Jena, Germany
F. Bechstedt
Affiliation:
Friedrich-Schiller-Universität, IFTO, Max-Wien-Platz 1, D-07743 Jena, Germany
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Abstract

The density-functional theory with ab initio pseudopotentials has been used to study the linear optical response of semiconductors. We present results for optical spectra where the effects of the macroscopic local-field and microscopic exchange-correlation interaction are included beyond diagonal and random-phase approximation. Quasiparticle corrections to the single-particle energies have been added in the polarization function. Numerical calculations are performed for the column-IV materials Si, SiC, and diamond as model substances.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 423: Symposium E – III-Nitride, SiC, and Diamond Materials for Electronic , 1996 , 711
Copyright
Copyright © Materials Research Society 1996

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