DIELECTRIC FUNCTION OF A MODEL INSULATOR

被引：40

作者：

FRY, JL

机构：

[1] Department of Physics and Astronomy, Louisiana State University, Baton Rouge

来源：

PHYSICAL REVIEW | 1969年 / 179卷 / 03期

关键词：

D O I：

10.1103/PhysRev.179.892

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A wave-number- and frequency-dependent dielectric function has been calculated for a model insulator using the random-phase approximation. The model insulator consists of a free-electron conduction band represented by a single orthogonalized plane wave (OPW) and a valence band represented by linear combinations of ionic wave functions. All energy bands are assumed parabolic and isotropic. Numerical results are obtained for Ar, KCl, CsCl, MnS, and Si, in reasonable agreement with previous calculations. Screened exchange potentials have been obtained by using an interpolation formula, and evaluated for the chlorine ion in CsCl. © 1969 The American Physical Society.

引用

页码：892 / +

共 40 条

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