TY - JOUR
T1 - Resonant inelastic soft-X-ray scattering at the 4d edge of Ce-based heavy-fermion materials
AU - Butorin, S. M.
AU - Magnuson, M.
AU - Ivanov, K.
AU - Shuh, D. K.
AU - Takahashi, T.
AU - Kunii, S.
AU - Guo, J. H.
AU - Nordgren, J.
N1 - Funding Information:
The authors thank G.L. Olcese and G. Chiaia for providing the samples and J.G. Tobin for the use of the closed cycle cryostat. This work was supported by the Swedish Natural Science Research Council and the Göran Gustavsson Foundation for Research in Natural Sciences and Medicine. The experiments at ALS were supported by the Office of Energy Research, Office of Basic Energy Science, Materials Sciences and Chemical Sciences Divisions of the U.S. Department of Energy, under contract No. DE-AC03-76SF00098.
PY - 1999
Y1 - 1999
N2 - Resonant X-ray scattering measurements were performed on CeB6, CeAl, γ-Ce, and α-Ce at various incident-photon energies near the Ce 4d threshold. A pronounced inelastic scattering structure which has 4f character is observed at about 4 eV below the elastic peak. The structure shows a distinct resonant behavior as well as a dependence on the degree of 4f hybridization and can therefore be attributed to charge-transfer excitations to the 4f0 state. The intensity of the elastic peak increases when going from the systems with low Kondo temperature TK to those with high TK which is consistent with a Kondo scale behavior. By analyzing the scattering data, a controversial issue on the validity of a single-impurity Anderson model in heavy-fermion materials is addressed.
AB - Resonant X-ray scattering measurements were performed on CeB6, CeAl, γ-Ce, and α-Ce at various incident-photon energies near the Ce 4d threshold. A pronounced inelastic scattering structure which has 4f character is observed at about 4 eV below the elastic peak. The structure shows a distinct resonant behavior as well as a dependence on the degree of 4f hybridization and can therefore be attributed to charge-transfer excitations to the 4f0 state. The intensity of the elastic peak increases when going from the systems with low Kondo temperature TK to those with high TK which is consistent with a Kondo scale behavior. By analyzing the scattering data, a controversial issue on the validity of a single-impurity Anderson model in heavy-fermion materials is addressed.
KW - Ce-based heavy-fermion systems
KW - Charge-transfer excitations
KW - Resonant soft-X-ray scattering
KW - X-ray absorption
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U2 - 10.1016/s0368-2048(98)00369-7
DO - 10.1016/s0368-2048(98)00369-7
M3 - Article
AN - SCOPUS:25544456008
SN - 0368-2048
VL - 101-103
SP - 783
EP - 786
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
ER -