Surface phonon dispersion of ZrC(100)

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

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)289-296
    Number of pages8
    JournalJournal of Electron Spectroscopy and Related Phenomena
    Volume44
    Issue number1
    DOIs
    Publication statusPublished - 1987

    Fingerprint

    Zirconium
    Carbon
    Atoms
    Electron energy loss spectroscopy
    carbon
    atoms
    surface layers
    rays
    energy dissipation
    Experiments
    electron energy
    spectroscopy
    Direction compound

    ASJC Scopus subject areas

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

    Cite this

    Franchy, R., Oshima, C., Aizawa, T., Souda, S., Otani, S., & Ishizawa, Y. (1987). Surface phonon dispersion of ZrC(100). Journal of Electron Spectroscopy and Related Phenomena, 44(1), 289-296. https://doi.org/10.1016/0368-2048(87)87029-9

    Surface phonon dispersion of ZrC(100). / Franchy, R.; Oshima, C.; Aizawa, T.; Souda, S.; Otani, S.; Ishizawa, Y.

    In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 44, No. 1, 1987, p. 289-296.

    Research output: Contribution to journalArticle

    Franchy, R, Oshima, C, Aizawa, T, Souda, S, Otani, S & Ishizawa, Y 1987, 'Surface phonon dispersion of ZrC(100)', Journal of Electron Spectroscopy and Related Phenomena, vol. 44, no. 1, pp. 289-296. https://doi.org/10.1016/0368-2048(87)87029-9
    Franchy, R. ; Oshima, C. ; Aizawa, T. ; Souda, S. ; Otani, S. ; Ishizawa, Y. / Surface phonon dispersion of ZrC(100). In: Journal of Electron Spectroscopy and Related Phenomena. 1987 ; Vol. 44, No. 1. pp. 289-296.
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    AB - 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.

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