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Heteroepitaxial System ofh-BN/Monolayer Graphene on Ni(111)

Author

Listed:
  • T. Tanaka

    (Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishi-waseda, Shinjuku, Tokyo 169-0051, Japan;
    Department of Applied Physics, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan)

  • A. Itoh

    (Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishi-waseda, Shinjuku, Tokyo 169-0051, Japan;
    Department of Applied Physics, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan)

  • K. Yamashita

    (Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishi-waseda, Shinjuku, Tokyo 169-0051, Japan;
    Department of Applied Physics, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan)

  • E. Rokuta

    (Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishi-waseda, Shinjuku, Tokyo 169-0051, Japan;
    Department of Applied Physics, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan)

  • C. Oshima

    (Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishi-waseda, Shinjuku, Tokyo 169-0051, Japan;
    Department of Applied Physics, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan)

Abstract

A heteroepitaxial system ofh-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 ofh-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 ofh-BN nanocrystals. In addition, we have observed subsidence phenomena of the graphene andh-BN layers into Ni substrate at elevated temperatures.

Suggested Citation

  • T. Tanaka & A. Itoh & K. Yamashita & E. Rokuta & C. Oshima, 2003. "Heteroepitaxial System ofh-BN/Monolayer Graphene on Ni(111)," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 10(04), pages 697-703.
    • Handle: RePEc:wsi:srlxxx:v:10:y:2003:i:04:n:s0218625x03005451
    DOI: 10.1142/S0218625X03005451
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