High-resolution photoemission study of CeRu2: The dual character of 4f electrons

S. H. Yang, H. Kumigashira, Takayoshi Yokoya, A. Chainani, T. Takahashi, H. Takeya, K. Kadowaki

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

High-resolution low-temperature photoemission spectroscopy was performed for CeRu2 to study the nature of low-lying excitations around the Fermi level (EF). It was found that the photoemission spectrum near EF shows two well-resolved peaks at and about 270 meV below EF, which are ascribed to the tail of the Ce 4 f1 final state located just above EF and its spin-orbit satellite (ΔSO∼270 meV), respectively. This suggests that the many-body-correlation effect is necessary for understanding the electronic structure near EF of CeRu2, although the Ce 4f electron exhibits a substantially itinerant character through the strong hybridization with the conduction electrons.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number18
Publication statusPublished - May 1 1996
Externally publishedYes

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Photoemission
photoelectric emission
satellite orbits
Electrons
high resolution
Photoelectron spectroscopy
Fermi level
conduction electrons
Electronic structure
Orbits
electrons
Satellites
electronic structure
spectroscopy
excitation
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Yang, S. H., Kumigashira, H., Yokoya, T., Chainani, A., Takahashi, T., Takeya, H., & Kadowaki, K. (1996). High-resolution photoemission study of CeRu2: The dual character of 4f electrons. Physical Review B - Condensed Matter and Materials Physics, 53(18).

High-resolution photoemission study of CeRu2 : The dual character of 4f electrons. / Yang, S. H.; Kumigashira, H.; Yokoya, Takayoshi; Chainani, A.; Takahashi, T.; Takeya, H.; Kadowaki, K.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 53, No. 18, 01.05.1996.

Research output: Contribution to journalArticle

Yang, SH, Kumigashira, H, Yokoya, T, Chainani, A, Takahashi, T, Takeya, H & Kadowaki, K 1996, 'High-resolution photoemission study of CeRu2: The dual character of 4f electrons', Physical Review B - Condensed Matter and Materials Physics, vol. 53, no. 18.
Yang, S. H. ; Kumigashira, H. ; Yokoya, Takayoshi ; Chainani, A. ; Takahashi, T. ; Takeya, H. ; Kadowaki, K. / High-resolution photoemission study of CeRu2 : The dual character of 4f electrons. In: Physical Review B - Condensed Matter and Materials Physics. 1996 ; Vol. 53, No. 18.
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