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

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2008-2013
Number of pages6
JournalJournal of the Physical Society of Japan
Volume73
Issue number7
DOIs
Publication statusPublished - 2004

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dichroism
valence
absorption spectra
x ray absorption
x ray spectroscopy
absorption spectroscopy
electrons
x rays
energy
impurities
polarization
interactions

Keywords

  • cluster model
  • L absorption edges
  • magnetic circular dichroism
  • mixed valence compound

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Theory of Magnetic Circular Dichroism of the Ce L2,3 X-ray Absorption Spectra in Mixed Valence Vompound CeFe2 . / Asakura, Kaname; Harada, Isao; Fukui, Keiji; Ogasawara, Haruhiko; Parlebas, J. C.; Kotani, Akio.

In: Journal of the Physical Society of Japan, Vol. 73, No. 7, 2004, p. 2008-2013.

Research output: Contribution to journalArticle

Asakura, Kaname ; Harada, Isao ; Fukui, Keiji ; Ogasawara, Haruhiko ; Parlebas, J. C. ; Kotani, Akio. / Theory of Magnetic Circular Dichroism of the Ce L2,3 X-ray Absorption Spectra in Mixed Valence Vompound CeFe2 In: Journal of the Physical Society of Japan. 2004 ; Vol. 73, No. 7. pp. 2008-2013.
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AU - Parlebas, J. C.

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