Theory of Magnetic Circular Dichroism of the Ce L2,3 X-ray Absorption Spectra in Mixed Valence Vompound CeFe2

Kaname Asakura, Isao Harada, Keiji Fukui, Haruhiko Ogasawara, J. C. Parlebas, Akio Kotani

研究成果査読

22 被引用数 (Scopus)

抄録

Magnetic circular dichroism (MCD) of x-ray absorption spectroscopy (XAS) at Ce L2,3 edges in the typical mixed valence compound CeFe2 is theoretically studied by using the impurity Anderson model combined with a cluster approach. It is found that the energy-dependent polarization of Ce 5d states due to mixing with spin-polarized Fe 3d states is indispensable for explaining the spectra. Our calculations reproduce well the two-peak structure observed in XAS and MCD experiments, especially their energy position, spectral width and energy separation of the two peaks. For a detailed analysis of these, the Coulomb interactions — Udc (between a 5d electron and a core hole) and Ufa (between a 4f electron and a 5d electron) play a special role.

本文言語English
ページ(範囲)2008-2013
ページ数6
ジャーナルjournal of the physical society of japan
73
7
DOI
出版ステータスPublished - 2004
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学一般

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