77 Se NMR probe of magnetic excitations of the magic angle effect in (TMTSF)2PF6

Weida Wu, P. M. Chaikin, W. Kang, J. Shinagawa, W. Yu, S. E. Brown

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We report 77Se spin-lattice relaxation rates for (TMTSF) 2PF6, carried out in the regime where a set of spectacular transport anomalies known as the "magic angle effects" are observed. In situ resistance measurements (Rzz) were used to verify the experimental conditions and give precise sample alignment information. We found that the 77Se T1-1 exhibits no significant changes as the magnetic-field orientation is rotated through the magic angles, and conclude that there is no evidence for either a single-particle gap or a spin gap. The clearly observed field-induced spin-density wave transition temperature is also, unexpectedly, not enhanced at the magic angles.

    Original languageEnglish (US)
    Article number097004
    JournalPhysical Review Letters
    Volume94
    Issue number9
    DOIs
    StatePublished - Mar 11 2005

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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