Angular momentum sum rules for x-ray absorption

被引：87

作者：

van der Laan, G ^{[1
]}

机构：

[1] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.57.112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The sum rules for circular and linear x-ray dichroism, which relate the signals of the core absorption edges to the expectation values of the valence spin and orbital operators. are expressed in jj-coupled operators. By including the cross terms between the j = l +/- 1/2 ground-state levels these sum rules are no longer restricted to jj coupling but are equally valid in intermediate coupling. The physical significance of these-usually very large-cross terms is discussed.

引用

页码：112 / 115

页数：4

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