Normalization and convergence of x-ray absorption sum rules

被引：21
|
作者：
Nesvizhskii, AI [1 ]
Ankudinov, AL [1 ]
Rehr, JJ [1 ]
机构：
[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA
来源：
PHYSICAL REVIEW B | 2001年 / 63卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.63.094412
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A procedure is developed for quantitative applications of the sum rules for x-ray absorption spectra, e.g., for x-ray magnetic circular dichroism. The approach is based on theoretical atomic calculations of transformations relating various experimental spectra to corresponding operator-spectral densities. This approach overcomes the difficulties of background subtraction and hole-count normalization of other sum-rule analysis methods and yields quantitative values for spin and orbital moments from experimental absorption spectra.
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页数：5
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