SEMICONDUCTOR ENERGY GAPS IN THE AVERAGE FOCK APPROXIMATION

被引：11

作者：

GU, YM

BYLANDER, DM

KLEINMAN, L

机构：

[1] Department of Physics, University of Texas, Austin

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.50.2227

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We find that Slater's averaged Fock exchange potential, unlike the local-density approximation or Hartree-Fock approximation, results in Ge and GaAs energy gaps in good agreement with experiment. Its cohesive energies disagree with experiment by amounts that are larger than, and of opposite sip to, those of the local-density approximation.

引用

页码：2227 / 2231

页数：5

共 27 条

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