Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy

H. Kumigashira, T. Sato, T. Yokoya, T. Takahashi, S. Yoshii, M. Kasaya

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (TK) while the temperature evolution is dominated by another characteristic temperature much lower than TK.

Original languageEnglish
Pages (from-to)284-285
Number of pages2
JournalPhysica B: Condensed Matter
Volume281-282
DOIs
Publication statusPublished - 2000 Jun 1
EventYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
Duration: 1999 Aug 241999 Aug 28

ASJC Scopus subject areas

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

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