Ginzburg Landau Theory for d-Wave Pairing and Fourfold Symmetric Vortex Core Structure

Kaoki Enomoto, Masanori Ichioka, Kazushige Machida

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    The Ginzburg Landau theory for dx2-y2-wave superconductors is constructed, by starting from the Gor'kov equation with including correction terms up to the next order of ln(Tc/T). Some of the non-local correction terms are found to break the cylindrical symmetry and lead to the fourfold symmetric core structure, reflecting the internal degree of freedom in the pair potential. Using this extended Ginzburg Landau theory, we investigate the fourfold symmetric structure of the pair potential, current and magnetic field around an isolated single vortex, and clarify concretely how the vortex core structure deviates from the cylindrical symmetry in the dx2-y2-wave superconductors.

    Original languageEnglish
    Pages (from-to)204-214
    Number of pages11
    Journaljournal of the physical society of japan
    Volume66
    Issue number1
    DOIs
    Publication statusPublished - Jan 1997

    Keywords

    • Ginzburg Landau theory
    • Vortex core structure
    • d-wave superconductor

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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