Theory of gap-node detection by angle-resolved specific heat measurement

P. Miranović, M. Ichioka, K. Machida, N. Nakai

    Research output: Contribution to journalArticlepeer-review

    36 Citations (Scopus)

    Abstract

    The specific heat oscillation in the mixed state of type II superconductors is studied theoretically when rotating a field within a plane containing a gap minimum and maximum. The calculations are performed microscopically by solving the quasi-classical Eilenberger equation for vortex lattices. The field dependence of the oscillation amplitude can discriminate between the nodal and anisotropic gap with a finite minimum and the oscillation phase gives the gap minimum position on the Fermi surface. These also provide a way to separate out the anisotropic behaviour due to the Fermi velocity.

    Original languageEnglish
    Pages (from-to)7971-7980
    Number of pages10
    JournalJournal of Physics Condensed Matter
    Volume17
    Issue number50
    DOIs
    Publication statusPublished - Dec 21 2005

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

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