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

    • Materials Science(all)
    • Condensed Matter Physics


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