Heat conduction in the vortex state of NbSe2: Evidence for multiband superconductivity

Etienne Boaknin, M. A. Tanatar, Johnpierre Paglione, D. Hawthorn, F. Ronning, R. W. Hill, M. Sutherland, Louis Taillefer, Jeff Sonier, S. M. Hayden, J. W. Brill

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184 Scopus citations

Abstract

A study of heat transport in NbSe2 down to Tc/100 throughout the vortex state, providing further evidence for multiband superconductivity (MBSC) was reported. Measurements of heat transport in the vortex state of NbSe2 at low temperatures reveal the existence of highly delocalized quasiparticles down to fields close to Hc1. This was in striking contrast with what was expected in a s-wave superconductor where well-separated vortices should support only localized states, as was observed in V3Si.

Original languageEnglish
Article number117003
Pages (from-to)117003/1-117003/4
JournalPhysical Review Letters
Volume90
Issue number11
StatePublished - Mar 21 2003

Bibliographical note

Funding Information:
We are grateful to H.-Y. Kee, Y. B. Kim, W. A. MacFarlane, K. Machida, A. G. Lebed, and K. B. Shamokhin for stimulating discussions. We thank Sas̆a Dukan for providing us with theoretical calculations. This work was supported by the Canadian Institute for Advanced Research and funded by NSERC of Canada.

ASJC Scopus subject areas

  • General Physics and Astronomy

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