Electronic state around vortex in a two-band superconductor

Masanori Ichioka, Kazushige Machida, Noriyuki Nakai, Predrag Miranović

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Based on the quasiclassical theory, we investigate the vortex state in a two-band superconductor with a small gap on a three-dimensional Fermi surface and a large gap on a quasi-two dimensional one, as in MgB2. The field dependence of zero-energy density of states is compared for fields parallel and perpendicular to the ab plane, and the anisotropy of the vortex core shape is discussed for a parallel field. The Fermi surface geometry of two bands, combining the effect of the normal-like electronic state on the small gap band at high fields, produces characteristic behavior in the anisotropy of c and ab directions.

Original languageEnglish
Article number144508
Pages (from-to)144508-1-144508-6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number14
DOIs
Publication statusPublished - Oct 1 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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