Magnetic field orientation dependent ground states in (TMTSF)2PF6

E. I. Chashechkina, P. M. Chaikin

    Research output: Contribution to journalArticle

    Abstract

    We report anisotropic and angular dependent magneto-resistance measurements in the 'normal' state of TMTSF2PF6 under pressure at low temperature. The most striking feature of this study occurs below 5K where we observe metallic behavior (dR/dT>0) when the field is aligned along intermolecular tunneling directions (Lebed magic angles) and non-metallic behavior (dR/dT>0) for other orientations. Previous results showed this behavior along the most conducting a direction, but here we show that the b and c (interplane) directions also exhibit this metallic to non-metallic transition with angle. At higher temperatures ( approx. 15-20K) there is a resistance minimum in the conducting (a-b) plane which is absent in the interplane (c) direction. Since we expect phase transitions, or other changes in the electronic state, to be observable in all directions, this observation implies that the nature of the ground state is reflected in the 5K magic angle effects and is determined by interplane decoupling rather than in-plane dimensionality crossovers.

    Original languageEnglish (US)
    Pages (from-to)2176-2179
    Number of pages4
    JournalSynthetic Metals
    Volume103
    Issue number1-3
    DOIs
    StatePublished - Jun 24 1999

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    Crystal orientation
    Ground state
    Magnetic fields
    ground state
    Electronic states
    Magnetoresistance
    magnetic fields
    Phase transitions
    Temperature
    conduction
    decoupling
    crossovers
    Direction compound
    electronics

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Materials Chemistry
    • Polymers and Plastics

    Cite this

    Magnetic field orientation dependent ground states in (TMTSF)2PF6 . / Chashechkina, E. I.; Chaikin, P. M.

    In: Synthetic Metals, Vol. 103, No. 1-3, 24.06.1999, p. 2176-2179.

    Research output: Contribution to journalArticle

    Chashechkina, E. I. ; Chaikin, P. M. / Magnetic field orientation dependent ground states in (TMTSF)2PF6 . In: Synthetic Metals. 1999 ; Vol. 103, No. 1-3. pp. 2176-2179.
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