Sound velocity measurements on (TMTSF)2PF6

P. M. Chaikin, T. Tiedje, A. N. Bloch

    Research output: Contribution to journalArticlepeer-review


    We have measured the velocity of sound for (TMTSF)2PF6 along the highly conducting b-axis by observing resonances in flexural and elongation modes of single crystals. Upon cooling large changes due to thermal expansion are observed as with TTF-TCNQ. In contrast with magnetic susceptibility measurements, the sound velocity clearly shows the opening of a gap at the metal insulator transition at 12 K. From the change in sound velocity at the transition we estimate the electron-phonon coupling c constant as λ ≈ 0.014 for long wavelength acoustic phonons.

    Original languageEnglish (US)
    Pages (from-to)739-742
    Number of pages4
    JournalSolid State Communications
    Issue number10
    StatePublished - Mar 1982

    ASJC Scopus subject areas

    • General Chemistry
    • Condensed Matter Physics
    • Materials Chemistry


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