A CALCULATION OF CORRELATION-FUNCTIONS BASED ON BAND-STRUCTURE

被引：1

作者：

WINTER, H ^{[1
]}

SZOTEK, Z ^{[1
]}

TEMMERMAN, WM ^{[1
]}

机构：

[1] SERC,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND

来源：

PHYSICA B | 1991年 / 172卷 / 1-2期

关键词：

D O I：

10.1016/0921-4526(91)90440-P

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss the evaluation of correlation functions in the framework of the RPA. Whereas the one-particle Green functions are constructed using the calculated band structures, the K-matrices of the corresponding Bethe-Salpeter equations are approximated by functional derivatives of the exchange-correlation potentials. This approach leads to reasonable results for a wide class of transition metals and compounds. We point out extensions of the theory, necessary in the case of ceramic materials.

引用

页码：271 / 278

页数：8

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