Critical field anisotropy in (TMTSF)2 CLO4 in the basal plane

Mu Yong Choi, P. M. Chaikin, P. Haen, R. L. Greene

    Research output: Contribution to journalArticlepeer-review


    We have performed detailed measurements of the critical field of (TMTSF)2 ClO4 in the plane perpendicular to the highly conducting a axis. We find a large anisotropy with the field in the c direction having a value which is more than an order of magnitude less than along the b direction. The b axis critical field is only slightly (50%) less than the a axis (the highly conducting direction). The angular and temperature dependences suggest that the anisotropy is a band structure effect along b and c, but that the a direction critical field is Pauli limited. These results imply that critical field anisotropy in the directions parallel and perpendicular to the highly conducting a axis cannot be used go obtain information about the band structure anisotropy and that the observed superconductivity is singlet rather than triplet.

    Original languageEnglish (US)
    Pages (from-to)225-229
    Number of pages5
    JournalSolid State Communications
    Issue number3
    StatePublished - Jan 1982

    ASJC Scopus subject areas

    • General Chemistry
    • Condensed Matter Physics
    • Materials Chemistry


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