MANY-BODY EFFECTS IN THE X-RAY-ABSORPTION EDGE OF RARE-EARTH SYSTEMS

被引：2

作者：

KOTANI, A

机构：

[1] Institute for Solid State Physics, University of Tokyo, Minato-ku Tokyo, 106

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷

关键词：

X-RAY ABSORPTION EDGE; RARE EARTH; MULTIPLET STRUCTURE; HYBRIDIZATION; CORE-HOLE LIFETIME;

D O I：

10.7567/JJAPS.32S2.3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A review is presented of many body effects originating from intraatomic multiplet coupling and interatomic hybridization in the X-ray absorption spectra (XAS) of rare-earth systems. With CeO2 as an example, the Ce N4,5, M4,5 and L3 XAS are theoretically analyzed with the impurity Anderson model, and the importance of the interplay between the multiplet coupling and the hybridization is shown for N4,5 and M4,5 XAS. Then we calculate a pre-edge structure of L3 XAS in Dy compounds, and discuss an elimination of the lifetime broadening in the L3 XAS, which has recently been attained experimentally by observing the excitation spectrum of L3-M5 X-ray emission.

引用

页码：3 / 7

页数：5

共 17 条

[1] SPECIFIC INTERMEDIATE-VALENCE STATE OF INSULATING 4F COMPOUNDS DETECTED BY L3 X-RAY ABSORPTION [J].