Surface phonons of the superconducting materials NbC(100) and TaC(100)

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

    Research output: Contribution to journalArticle

    24 Citations (Scopus)

    Abstract

    The dispersion curves of both the optical and acoustical surface phonons in the superconducting compounds NbC(100) and TaC(100) have been determined over the entire Brillouin zone of the M symmetry axis by use of angle-resolved high-resolution electron-energy-loss spectroscopy. In contrast to the bulk phonon, no anomalies (dip) due to the electron-phonon coupling in the dispersion curves of the longitudinal phonon have been found at these surfaces. Conversely, the in-plane force constant between carbon and metal atoms is strongly enhanced there.

    Original languageEnglish
    Pages (from-to)240-243
    Number of pages4
    JournalPhysical Review Letters
    Volume56
    Issue number3
    DOIs
    Publication statusPublished - 1986

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    phonons
    curves
    Brillouin zones
    energy dissipation
    electron energy
    anomalies
    carbon
    high resolution
    symmetry
    metals
    spectroscopy
    atoms
    electrons

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Surface phonons of the superconducting materials NbC(100) and TaC(100). / Oshima, C.; Souda, R.; Aono, M.; Otani, S.; Ishizawa, Y.

    In: Physical Review Letters, Vol. 56, No. 3, 1986, p. 240-243.

    Research output: Contribution to journalArticle

    Oshima, C, Souda, R, Aono, M, Otani, S & Ishizawa, Y 1986, 'Surface phonons of the superconducting materials NbC(100) and TaC(100)', Physical Review Letters, vol. 56, no. 3, pp. 240-243. https://doi.org/10.1103/PhysRevLett.56.240
    Oshima, C. ; Souda, R. ; Aono, M. ; Otani, S. ; Ishizawa, Y. / Surface phonons of the superconducting materials NbC(100) and TaC(100). In: Physical Review Letters. 1986 ; Vol. 56, No. 3. pp. 240-243.
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    AU - Oshima, C.

    AU - Souda, R.

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    AU - Otani, S.

    AU - Ishizawa, Y.

    PY - 1986

    Y1 - 1986

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