Electronic structure of pristine and K-doped solid picene: Nonrigid band change and its implication for electron-intramolecular-vibration interaction

H. Okazaki, T. Wakita, T. Muro, Y. Kaji, X. Lee, H. Mitamura, N. Kawasaki, Y. Kubozono, Y. Yamanari, T. Kambe, T. Kato, M. Hirai, Y. Muraoka, T. Yokoya

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    38 Citations (Scopus)

    Abstract

    We use photoemission spectroscopy to study electronic structures of pristine and K-doped solid picene. The valence band spectrum of pristine picene consists of three main features with no state at the Fermi level (EF) while that of K-doped picene has three structures similar to those of pristine picene with new states near EF, consistent with the semiconductor-metal transition. The K-induced change cannot be explained with a simple rigid-band model of pristine picene but can be interpreted by molecular-orbital calculations considering electron-intramolecular-vibration interaction. Excellent agreement of the K-doped spectrum with the calculations points to importance of electron-intramolecular-vibration interaction in K-doped picene.

    Original languageEnglish
    Article number195114
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume82
    Issue number19
    DOIs
    Publication statusPublished - 2010 Nov 10

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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    Okazaki, H., Wakita, T., Muro, T., Kaji, Y., Lee, X., Mitamura, H., Kawasaki, N., Kubozono, Y., Yamanari, Y., Kambe, T., Kato, T., Hirai, M., Muraoka, Y., & Yokoya, T. (2010). Electronic structure of pristine and K-doped solid picene: Nonrigid band change and its implication for electron-intramolecular-vibration interaction. Physical Review B - Condensed Matter and Materials Physics, 82(19), [195114]. https://doi.org/10.1103/PhysRevB.82.195114