Low field anomaly in the specific heat of s-wave superconductors due to the expansion of the vortex cores

J. E. Sonier, M. F. Hundley, J. D. Thompson, J. W. Brill

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

The magnetic field dependence of the electronic specific heat C(H)in the s-wave superconductor NbSe2 shows curvature at low fields, resembling the near vH term in C(H) which has been reported in high- Tc superconductors and attributed to a dx2-y2-wave pairing state. In NbSe2 we find that the low field behavior in C(H) is described quantitatively by the expansion of vortex cores and the field dependence of the magnetic induction B above Hc1. The associated change in the density of quasiparticle states localized in the vortex cores provides a simple explanation for the “low field anomaly” in C(H) observed in s-wave superconductors.

Original languageEnglish
Pages (from-to)4914-4917
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number24
DOIs
StatePublished - 1999

ASJC Scopus subject areas

  • Physics and Astronomy (all)

Fingerprint

Dive into the research topics of 'Low field anomaly in the specific heat of s-wave superconductors due to the expansion of the vortex cores'. Together they form a unique fingerprint.

Cite this