Theory of pairing symmetry in fulde-ferrell-larkin-ovchinnikov vortex state and vortex lattice

Takehito Yokoyama, Masanori Ichioka, Yukio Tanaka

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    We investigate the pairing symmetry of induced superconductivity in two systems, namely, (i) the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) vortex state and (ii) vortex lattice state without FFLO modulation, and explain the electronic structure in these states in terms of pairing symmetry. We analytically show that, at the intersection point of the FFLO nodal plane and vortex line, only evenfrequency pairing is present if the Zeeman splitting is negligible. With increasing Zeeman splitting, oddfrequency pairing emerges at such a point. In the vortex lattice, we find that only odd-frequency pairing is present at core centers, while at the midpoint of vortex lines, only even-frequency pairing exists.

    Original languageEnglish
    Article number034702
    Journaljournal of the physical society of japan
    Volume79
    Issue number3
    DOIs
    Publication statusPublished - Mar 2010

    Keywords

    • Fulde-Ferrell-Larkin-Ovchinnikov state
    • Pairing symmetry
    • Vortex state

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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