Theory of Magnetic Circular Dichroism of the Ce L_<2, 3> X-ray Absorption Spectra in Mixed Valence Vompound CeFe_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• Magnetic circular dichroism (MCD) of x-ray absorption spectroscopy (XAS) at Ce L_<2, 3> edges in the typical mixed valence compound CeFe_2 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 -U_<dc> (between a 5d electron and a core hole) and U_<fd> (between a 4f electron and a 5d electron) play a special role.

• 社団法人日本物理学会の論文
• 2004-07-15

著者

• 小谷 章雄

  SPring-8

• 小谷 章雄

  理研 Spring-8:高エ研

• Parlebas J

  Department Of Physics Faculty Of Science Okayama University

• Harada I

  Okayama Univ. Okayama

• Harada Isao

  Institute For Solid State Physics University Of Tokyo

• Harada Isao

  Department Of Physics Faculty Of Science Kobe University

• KOTANI Akio

  RIKEN

• Kotani Akio

  Department Of Mechanical Engineering Osaka University

• Ogasawara H

  Spring-8:(present Address)school Of Physics And Physics Research Division Seoul National Universty

• Ogasawara Haruhiko

  Institute For Solid State Physics University Of Tokyo

• ASAKURA Kaname

  Department of Physics, Faculty of Science, Okayama University

• FUKUI Keiji

  RIKEN

• OGASAWARA Haruhiko

  Spring-8

• PARLEBAS J.

  Department of Physics, Faculty of Science, Okayama University

• KOTANI Akio

  IPCMS-GEMM

• 小谷 章雄

  理化学研究所播磨研究所

• Ogasawara Hiromitsu

  Department Of Materials Science And Technology Iwate University

• Fukui K

  Research Center For Development Of Far-infrared Region Fukui University

• Asakura Kaname

  Department Of Physics Faculty Of Science Okayama University

• KOTANI Akio

  Department of Physics, Tohoku University : Institute for Solid State Physics, University of Tokyo

• HARADA Isao

  Department of Physics, Kobe University : Department of Physics, Okayama University

• Parlebas J.

  IPCMS

• KOTANI Akio

  RIKEN/Spring-8:Photon Factory, Institute of Materials Structure Science

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