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

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

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34 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

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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