Electronic structure of K-doped picene film on HOPG

T. Wakita, H. Okazaki, T. Jabuchi, H. Hamada, Y. Muraoka, T. Yokoya

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We have performed potassium (K)-doping dependent photoemission (PES) measurements of picene film on highly oriented pyrolytic graphite (HOPG). K-doping dependent valence band PES data exhibits a shift of the valence band to a higher binding energy, indicative of the charge transfer from the K atoms to the picene film. K-doping dependent PES spectra near the Fermi level (E F) show the appearance and disappearance of a Fermi edge, indicating the metallic properties of the film at certain K concentrations. High-resolution PES spectrum at the lowest measured temperature does not show an opening of the superconducting gap, requesting further studies to explore the superconducting properties of the K-doped picene film. The results will be discussed by comparison with previous and recent spectroscopic studies.

Original languageEnglish
Article number064001
JournalJournal of Physics Condensed Matter
Issue number6
Publication statusPublished - Feb 15 2017


  • K-doped picene
  • electronic structure
  • photoemission spectroscopy

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics


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