Soft X-ray emission and high-resolution photoemission study of quasi-two-dimensional superconductor NaxHfNCl

T. Takeuchi, S. Tsuda, T. Yokoya, T. Tsukamoto, S. Shin, A. Hirai, S. Shamoto, T. Kajitani

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

We have performed soft X-ray emission (SXE) and high-resolution photoemission (PE) spectroscopy to study the electronic structures of β-HfNCl and Na-intercalated HfNCl. Both the PE and SXE spectra of Na 0.37HfNCl show an additional structure within the band gap of β-HfNCl, without an apparent shift in the energy position of valence-band features. These results clearly reveal intercalant-induced changes in the electronic structure of the layered nitride chlorides. From these results, we propose non-rigid band like behavior for this system in contrast to generally expected rigid-band filling upon intercalation.

Original languageEnglish
Pages (from-to)127-129
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - Oct 1 2003
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: Nov 11 2002Nov 13 2002

Keywords

  • Electronic structure
  • Layered nitride chloride superconductor
  • Photoemission
  • Soft X-ray emission

ASJC Scopus subject areas

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

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