Resonant inelastic soft-X-ray scattering at the 4d edge of Ce-based heavy-fermion materials

S. M. Butorin, M. Magnuson, K. Ivanov, D. K. Shuh, T. Takahashi, S. Kunii, J. H. Guo, J. Nordgren

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)783-786
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume101-103
DOIs
Publication statusPublished - 1999

Keywords

  • Ce-based heavy-fermion systems
  • Charge-transfer excitations
  • Resonant soft-X-ray scattering
  • X-ray absorption

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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