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

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

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)


    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
    Issue number3
    Publication statusPublished - 1986

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


    Dive into the research topics of 'Surface phonons of the superconducting materials NbC(100) and TaC(100)'. Together they form a unique fingerprint.

    Cite this