Dispersion curves of the surface phonons of the TiC(100) surface

C. Oshima, R. Souda, M. Aono, S. Otani, Y. Ishizawa

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    Abstract

    The dispersion curves of the surface phonons of the TiC(100) surface have been determined over the entire Brillouin zone along the Γ-M direction by using electron energy loss spectroscopy. We have observed an acoustical branch (Rayleigh mode) and three optical branches (Lucas and Wallis modes and a new mode), which are assigned from a simple calculation based on the nearest-neighbour force constant model. The stiffening of the stretching force constant between the topmost layer and the second layer results in a new mode, which explains qualitatively the new observed optical mode.

    Original languageEnglish
    Pages (from-to)519-527
    Number of pages9
    JournalSurface Science
    Volume178
    Issue number1-3
    DOIs
    Publication statusPublished - 1986 Dec 3

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    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Condensed Matter Physics
    • Surfaces and Interfaces

    Cite this

    Oshima, C., Souda, R., Aono, M., Otani, S., & Ishizawa, Y. (1986). Dispersion curves of the surface phonons of the TiC(100) surface. Surface Science, 178(1-3), 519-527. https://doi.org/10.1016/0039-6028(86)90328-6