Thermal conductivity as a probe of unconventional superconducting gap

H. Aubin; K. Behnia; M. Ribault; L. Taillefer; R. Gagnon

doi:10.1007/s002570050349

Thermal conductivity as a probe of unconventional superconducting gap

H. Aubin
, K. Behnia
, M. Ribault
, L. Taillefer
, R. Gagnon

Laboratoire de Physique des Solides
Department of Physics
McGill University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We have carried out a comparative study of the thermal conductivity of two rectangular single crystals: a niobium sample and a detwinned YBCO. Thermal conductivity was measured as a function of the relative orientation of the crystaline axes and a magnetic field applied parallel to the sample plane. Different angular variations, two-fold for Nb and four-fold for YBCO, were observed in the two case. We discuss the microscopic effects related to the gap structure which are at the origin of this qualitative difference in the behavior of thermal conductivity in these two superconductors.

Original language	English
Pages (from-to)	149-151
Number of pages	3
Journal	Zeitschrift fur Physik B-Condensed Matter
Volume	103
Issue number	2
DOIs	https://doi.org/10.1007/s002570050349
Publication status	Published - 1 Jun 1996
Externally published	Yes

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AU - Behnia, K.

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AU - Taillefer, L.

AU - Gagnon, R.

PY - 1996/6/1

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N2 - We have carried out a comparative study of the thermal conductivity of two rectangular single crystals: a niobium sample and a detwinned YBCO. Thermal conductivity was measured as a function of the relative orientation of the crystaline axes and a magnetic field applied parallel to the sample plane. Different angular variations, two-fold for Nb and four-fold for YBCO, were observed in the two case. We discuss the microscopic effects related to the gap structure which are at the origin of this qualitative difference in the behavior of thermal conductivity in these two superconductors.

AB - We have carried out a comparative study of the thermal conductivity of two rectangular single crystals: a niobium sample and a detwinned YBCO. Thermal conductivity was measured as a function of the relative orientation of the crystaline axes and a magnetic field applied parallel to the sample plane. Different angular variations, two-fold for Nb and four-fold for YBCO, were observed in the two case. We discuss the microscopic effects related to the gap structure which are at the origin of this qualitative difference in the behavior of thermal conductivity in these two superconductors.

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Thermal conductivity as a probe of unconventional superconducting gap

Abstract

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