A heteroepitaxial multi-atomic-layer system of graphene and h-BN

C. Oshima, N. Tanaka, A. Itoh, E. Rokuta, K. Yamashita, Toshio Sakurai

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Multi-atomic-layer systems stacked with monolayer graphene/monolayer h-BN/Ni(111) have been grown in an epitaxial manner. The graphene overlayer formation changes drastically the interfacial interaction between the h-BN layer and Ni(111). As a result, a peculiar property of the monolayer h-BN on Ni(111) changes to a bulklike one. The π-d orbital hybridization at the interface disappears. Accordingly, a metallic character of monolayer h-BN disappears, the soft TO ⊥ phonon returns to the bulk one, and the reduced lattice constant of h-BN on Ni(111) also returns to the bulk one. In contrast, the h-BN overlayer formation does not change the interface between the monolayer graphene and Ni(111). From those data, the strength order of interfacial bonds changes as follows: graphene/Ni(111) > graphene/h-BN > h-BN/Ni(111).

    Original languageEnglish
    Pages (from-to)521-525
    Number of pages5
    JournalSurface Review and Letters
    Volume7
    Issue number5-6
    DOIs
    Publication statusPublished - 2000 Dec 1

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films
    • Materials Chemistry

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