Comment on the analysis of angle-dependent X-ray magnetic circular dichroism in systems with reduced dimensionality

被引：11

作者：

Ederer, C

Komelj, M

Davenport, JW

Fähnle, M

机构：

[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

[2] Brookhaven Natl Lab, Ctr Data Intens Comp, Upton, NY 11973 USA

[3] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2003年 / 130卷 / 1-3期

关键词：

angle-dependent XMCD; magnetic dipole term; monatomic Co wires; abinitio electron theory;

D O I：

10.1016/S0368-2048(03)00086-0

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The magnetic dipole term (T) appearing in the X-ray magnetic circular dichroism (XMCD) spin sum rule can be eliminated from the analysis within the spin sum rule by angle-dependent XMCD spectroscopy if the effects of spin-orbit coupling are small so that (T-x) + (T-y) + (T-z) approximate to 0. It is shown by the ab initio electron theory for the extreme case of a low-dimensional system, i.e., for a free-standing monatomic Co wire that this relation is strongly violated, indicating that the determination of (T) by the angle-dependent XMCD is possibly not very reliable for low-dimensional magnetic systems. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：97 / 100

页数：4

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