TY - JOUR
T1 - Electronic structure of semiconducting Ce Fe4 P12
T2 - Strong hybridization and relevance of single-impurity Anderson model
AU - Matsunami, M.
AU - Horiba, K.
AU - Taguchi, M.
AU - Yamamoto, K.
AU - Chainani, A.
AU - Takata, Y.
AU - Senba, Y.
AU - Ohashi, H.
AU - Yabashi, M.
AU - Tamasaku, K.
AU - Nishino, Y.
AU - Miwa, D.
AU - Ishikawa, T.
AU - Ikenaga, E.
AU - Kobayashi, K.
AU - Sugawara, H.
AU - Sato, H.
AU - Harima, H.
AU - Shin, S.
PY - 2008/4/18
Y1 - 2008/4/18
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.77.165126
DO - 10.1103/PhysRevB.77.165126
M3 - Article
AN - SCOPUS:42449096450
VL - 77
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 16
M1 - 165126
ER -