Phase coherence and the Nernst effect at magic angles in organic conductors

N. P. Ong, Weida Wu, P. M. Chaikin, P. W. Anderson

    Research output: Contribution to journalArticle

    Abstract

    A giant Nernst signal was recently observed for fields near crystallographic directions in (TMTSF)2PF6. Such large Nernst signals are most naturally associated with the motion of pancake vortices. We propose a model in which phase coherence is destroyed throughout the sample except in planes closely aligned with the applied field H. A small tilt above or below the plane changes the direction and density of the penetrating vortices and leads to a Nernst signal that varies with the tilt angle of H as observed. The resistance notches at magic angles are understood in terms of flux-flow dissipation from field-induced vortices.

    Original languageEnglish (US)
    Pages (from-to)579-584
    Number of pages6
    JournalEurophysics Letters
    Volume66
    Issue number4
    DOIs
    StatePublished - May 2004

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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