Field dependence of the zero-energy density of states around vortices in an anisotropic-gap superconductor

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

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

It is shown theoretically that the Sommerfeld coefficient γ(B) in the mixed state contains useful information on the gap topology in a superconductor. We accurately evaluate γ(B) against magnetic induction B by using microscopic quasiclassical theory. The linear portion in γ(B) relative to 5c2 and its slope in low field faithfully corresponds to the gap anisotropy, so that we can distinguish the nodal gap and the anisotropic full gap, and estimate the magnitude of the gap anisotropy.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number10
DOIs
Publication statusPublished - Sep 2004

Fingerprint

Superconducting materials
Vortex flow
Anisotropy
flux density
vortices
Electromagnetic induction
Topology
anisotropy
magnetic induction
topology
slopes
coefficients
estimates

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Field dependence of the zero-energy density of states around vortices in an anisotropic-gap superconductor. / Nakai, N.; Miranović, P.; Ichioka, Masanori; Machida, K.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 70, No. 10, 09.2004.

Research output: Contribution to journalArticle

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