Electronic structure of semiconducting Ce Fe4 P12: Strong hybridization and relevance of single-impurity Anderson model

M. Matsunami, K. Horiba, M. Taguchi, K. Yamamoto, A. Chainani, Y. Takata, Y. Senba, H. Ohashi, M. Yabashi, K. Tamasaku, Y. Nishino, D. Miwa, T. Ishikawa, E. Ikenaga, K. Kobayashi, H. Sugawara, H. Sato, H. Harima, S. Shin

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11 引文 斯高帕斯(Scopus)

摘要

Semiconducting skutterudite Ce Fe4 P12 is investigated by synchrotron x-ray photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). Ce 3d core-level PES and 3d-4f XAS, in combination with single-impurity Anderson model (SIAM) calculations, confirm features due to f0, f1, and f2 configurations. The Ce 3d-4f resonant-PES spectra provide the Ce 4f density of states (DOS), which indicates the absence of a Kondo resonance at the Fermi level, but can still be explained by SIAM with a small gap in non- f DOS. While Ce 4f partial DOS from band structure calculations is consistent with the main Ce 4f DOS, the importance of SIAM for core-level PES and XAS spectra quantifies the mixed valence for semiconducting Ce Fe4 P12, derived from strong hybridization between non- f conduction and Ce 4f DOS.

原文English
文章編號165126
期刊Physical Review B - Condensed Matter and Materials Physics
77
發行號16
DOIs
出版狀態Published - 2008 四月 18

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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