Simple fit for magic-angle magnetoresistance in (TMTSF)2PF6

E. I. Chashechkina, P. M. Chaikin

    Research output: Contribution to journalArticle

    Abstract

    The angular-dependent magnetoresistance in the Bechgaard salts (TMTSF)2X (X=PF6, ClO4, etc.) is characterized by sharp dips when the field is aligned along lattice vectors. Although magic-angle effects were originally predicted by Lebed, they remain largely unexplained. Here we present detailed interplane transport data and show that a simple model involving conductivity contributions from transfers between neighboring chains, which are individually destroyed by a perpendicular field, fits most c-axis data remarkably well. The fitting illustrates what can be explained by classical transport and what cannot - a dominant term from hopping perpendicular to the current direction. Combined with the observation that the fitting also "works" for a-axis data, this suggests a different interpretation: The quasi-one-dimensional system is insulating and any unnesting transfer makes it metallic.

    Original languageEnglish (US)
    Article number012405
    Pages (from-to)124051-124054
    Number of pages4
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume65
    Issue number1
    StatePublished - Jan 1 2002

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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    Chashechkina, E. I., & Chaikin, P. M. (2002). Simple fit for magic-angle magnetoresistance in (TMTSF)2PF6. Physical Review B - Condensed Matter and Materials Physics, 65(1), 124051-124054. [012405].