Hybridization gap in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy

H. Kumigashira, T. Takahashi, Shunsuke Yoshii, M. Kasaya

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Ultrahigh-resolution photoemission spectroscopy (ΔE∼8 meV) has been performed on Kondo insulators CeRhAs and CeRhSb. We found that the 4f-derived density of states shows a depletion (pseudogap) at EF in contrast to metallic Kondo materials. It was also found that the size of both 4f-derived and conduction-electron derived pseudogaps scales well with the Kondo temperature.

Original languageEnglish
Pages (from-to)208-209
Number of pages2
JournalPhysica B: Condensed Matter
Volume312-313
DOIs
Publication statusPublished - 2002 Mar 1
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: 2002 Aug 62002 Aug 6

Keywords

  • CeRhAs
  • CeRhSb
  • Kondo insulator
  • Photoemission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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