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

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

    研究成果: Article査読

    15 被引用数 (Scopus)

    抄録

    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.

    本文言語English
    ページ(範囲)697-703
    ページ数7
    ジャーナルSurface Review and Letters
    10
    4
    DOI
    出版ステータスPublished - 2003 8月

    ASJC Scopus subject areas

    • 材料科学(全般)
    • 表面および界面
    • 原子分子物理学および光学
    • 凝縮系物理学
    • 電子材料、光学材料、および磁性材料

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