Two-Gap Superconductivity in 2H-NbS_2

• Authors: Z. Pribulová , M. Leroux , J. Kačmarčík , C. Marcenat , T. Klein , P. Rodière , L. Cario , P. Samuely
• Languages of publication: EN

Abstracts

EN

We performed specific heat measurements of the superconducting single crystal of 2H-NbS_2 in the temperature range down to 0.6 K and magnetic fields up to 14 T. The temperature and magnetic field dependence of the electronic specific heat consistently indicate existence of two superconducting energy gaps in the system. The superconducting anisotropy depends on both temperature and magnetic field. Moreover, the angular dependence of the upper critical field deviates from the Ginzburg-Landau behavior and rather reminds that of MgB_2. All these features point to a multigap superconductivity in 2H-NbS_2. Our measurements are in a perfect agreement with the previous scanning tunneling spectroscopy of Guillamón et al.

Keywords

EN

74.25.Bt; 74.70.Ad

Discipline

• 74.70.Ad: Metals; alloys and binary compounds (including A15, MgB2, etc.)
• 74.25.Bt: Thermodynamic properties

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 1024-1025

Dates

published

2010-11

Contributors

author

Z. Pribulová

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences and P.J. Šafárik University, Watsonova 47, SK-04353 Košice, Slovakia

author

M. Leroux

• Institut Néel, CNRS, F-38042 Grenoble Cedex 9, France

author

J. Kačmarčík

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences and P.J. Šafárik University, Watsonova 47, SK-04353 Košice, Slovakia

author

C. Marcenat

• CEA, Institut Nanosciences et Cryogénie, SPSMS - LaTEQS, F-38054 Grenoble Cedex 9, France

author

T. Klein

• Institut Néel, CNRS, F-38042 Grenoble Cedex 9, France
• Institut Universitaire de France and Université Joseph Fourier, F-38041 Grenoble Cedex 9, France

author

P. Rodière

• Institut Néel, CNRS, F-38042 Grenoble Cedex 9, France

author

L. Cario

• Institut des Matériaux Jean Rouxel, Université de Nantes-CNRS, F-44322 Nantes Cedex 3, France

author

P. Samuely

• Centre of Low Temperature Physics, IEP Slovak Academy of Sciences and P.J. Šafárik University, Watsonova 47, SK-04353 Košice, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.118.1024