The superconducting state in (TMTSF)2PF6 in high magnetic field

I. J. Lee, M. J. Naughton, P. M. Chaikin

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The resistive upper critical field along the b-axis (Hc2//b) in (TMTSF)2PF6 is investigated in detail in fields to 17.5 T and temperatures to T/Tc ∼ 1/60, at various pressures near the border between spin density wave and metallic states. Previously, we had obtained a novel crossover where Hc2//b exceeded both Hc2//a, in contrast to band structure, and the Pauli paramagnetic limit μoHp≈ 2 T. Remarkably, in an optimum pressure setting reported here, it is found that the onset of superconductivity persists up to 9 T (> 4 Hp), which strongly suggests triplet Cooper pairing. Strong upward curvature with nearly diverging behaviour of the critical field also seem to suggest a field-dependent dimensional crossover, although the Hc2 enhancement is considerably more than that predicted by recent theories.

    Original languageEnglish (US)
    Pages (from-to)915-916
    Number of pages2
    JournalSynthetic Metals
    Volume120
    Issue number1-3
    DOIs
    StatePublished - Mar 15 2001

    Keywords

    • Organic superconductors
    • Superconducting phase transitions

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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