X-RAY-ABSORPTION NEAR-EDGE STRUCTURE IN METALS - RELATIVISTIC EFFECTS AND CORE-HOLE SCREENING

被引：37

作者：

TAMURA, E

VANEK, J

FROBA, M

WONG, J

机构：

[1] Lawrence Livermore National Laboratory, University of California, Livermore, CA 94551

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.74.4899

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A long standing theoretical problem "the absence of a white line in the L2 x-ray absorption near edge spectrum of Pt metal" has been solved taking into account relativistic effects and the presence of a core hole. The photoabsorbing atom is treated as a single-site impurity in our theory of x-ray absorption near edge structure (XANES) based on the fully relativistic layer Korringa-Kohn-Rostoker Green-function method. Comparing the XANES of Al with those of Cu and Pt, it is found that for transition metals d electrons play a dominant role in deep core-hole screening, whereas in Al sp electrons are important. © 1995 The American Physical Society.

引用

页码：4899 / 4902

页数：4

共 29 条

[1] AB-INITIO SURFACE CORE-LEVEL SHIFTS AND SURFACE SEGREGATION ENERGIES [J].