Evidence for correlation effects i from resonant and x-ray photoemission spectroscopy

T. Yokoya, A. Chainani, T. Takahashi, H. Katayama-Yoshida, M. Kasai, Y. Tokura

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43 Citations (Scopus)


We study the electronic structure of (Formula presented)(Formula presented), a noncuprate layered superconductor ((Formula presented)=0.93 K), using electron spectroscopy. X-ray photoemission spectroscopy shows that the single particle occupied density of states (DOS) is in fair agreement with the calculated DOS. However, resonant photoemission spectroscopy across the Ru 4p-4d threshold establishes the existence of a correlation satellite to the Ru 4d band. The results indicate substantial charge-transfer character at the Fermi level, with on-site correlations (Formula presented) comparable in magnitude to the Ru-O hopping integral, like the cuprates.

Original languageEnglish
Pages (from-to)8151-8154
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number13
Publication statusPublished - 1996

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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