Specific heat and low-lying excitations in the mixed state for a type-II superconductor

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

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    18 Citations (Scopus)

    Abstract

    Low temperature behavior of the electronic specific heat C(T) in the mixed state is by the self-consistent calculation of the Eilenberger theory. In addition to the γT -term (γ is a Sommerfeld coefficient), C(T) has a significant contribution of T2 -term intrinsic in the vortex state. We identify the origin of the T2 term as (i) V-shape density of states in the vortex state and (ii) the Kramer-Pesch effect of vortex-core shrinking upon lowering T. These results for both full-gap and line-node cases reveal that the vortex core is a richer electronic structure beyond the normal core picture.

    Original languageEnglish
    Article number172501
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume73
    Issue number17
    DOIs
    Publication statusPublished - 2006

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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