Heteroepitaxial system of h-BN/monolayer graphene on Ni(111)

T. Tanaka, A. Itoh, K. Yamashita, E. Rokuta, C. Oshima

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    13 Citations (Scopus)

    Abstract

    A heteroepitaxial system of h-BN/monolayer graphene on Ni(111) has been investigated by means of vibrational spectroscopy, accompanied by low energy electron diffraction (LEED) and Auger electron spectroscopy (AES). The system was prepared in an epitaxial manner on a Ni(111) surface by chemical vapor deposition (CVD). We found that phonon peaks in observed spectra showed typical features of Fuchs-Kliewer (FK) phonons. The vibrational spectra of h-BN films ranging in thickness from 0 to 8.7 monolayers have been compared with theoretical spectra based on a dielectric theory. Detailed analysis has revealed new types of phonons, of which the vibrational amplitudes are localized at edges of h-BN nanocrystals. In addition, we have observed subsidence phenomena of the graphene and h-BN layers into Ni substrate at elevated temperatures.

    Original languageEnglish
    Pages (from-to)697-703
    Number of pages7
    JournalSurface Review and Letters
    Volume10
    Issue number4
    DOIs
    Publication statusPublished - 2003 Aug

    Keywords

    • Graphite
    • h-BN
    • HREELS
    • Nanocrystals

    ASJC Scopus subject areas

    • Materials Science(all)
    • Surfaces and Interfaces
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

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  • Cite this

    Tanaka, T., Itoh, A., Yamashita, K., Rokuta, E., & Oshima, C. (2003). Heteroepitaxial system of h-BN/monolayer graphene on Ni(111). Surface Review and Letters, 10(4), 697-703. https://doi.org/10.1142/S0218625X03005451