Surface phonon dispersion of ZrC(100)

R. Franchy, C. Oshima, T. Aizawa, S. Souda, S. Otani, Y. Ishizawa

    研究成果: Article査読

    7 被引用数 (Scopus)

    抄録

    The surface phonon dispersion on ZrC(100) has been measured in the T X and T M-direction by electron energy loss spectroscopy. We have observed the Ray-leigh wave, two resonance branches within the acoustical phonon band and several optical phonon branches. The experimental data are compared to a lattice dynamical calculation based on the screened shell model. Increasing the force constant between first layer zirconium and second layer carbon atoms and decreasing the force constant between first layer carbon and second layer zirconium atoms leads to a good agreement between experiment and theory. These force constant changes strongly suggest a rippled relaxation of the surface layer.

    本文言語English
    ページ(範囲)289-296
    ページ数8
    ジャーナルJournal of Electron Spectroscopy and Related Phenomena
    44
    1
    DOI
    出版ステータスPublished - 1987

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Spectroscopy
    • Atomic and Molecular Physics, and Optics
    • Surfaces and Interfaces

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