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Specific Heat of Robust Nb2PdS5 Superconductor

  • Reena Goyal
  • Brajesh Tiwari
  • Rajveer Jha
  • V. P. S. AwanaEmail author
Letter

Abstract

We report specific heat under different magnetic fields for recently discovered quasi-one-dimensional Nb2PdS5 superconductor. The studied compound is superconducting below 6 K. Nb2PdS5 is quite robust against magnetic field with dH c/dT of −42 kOe/K. The estimated upper critical field [ H c2(0)] is 190 kOe, clearly surpassing the Pauli-paramagnetic limit of 1.84 T c. Low-temperature heat capacity in superconducting state of Nb2PdS5 under different magnetic fields showed s-wave superconductivity with two different gaps. Two quasilinear slopes in Somerfield coefficient (γ) as a function of applied magnetic field and two-band behavior of the electronic heat capacity demonstrate that Nb2PdS5 is a multiband superconductor in weak coupling limit with ΔC/ γ T c = 0.9.

Keywords

Superconductivity Magneto transport Heat capacity 

Notes

Acknowledgments

Reena Goyal would like to thank UGC for the research fellowship. This research work is financially supported under DAE-SRC outstanding investigator award scheme on search for new superconductors.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Reena Goyal
    • 1
  • Brajesh Tiwari
    • 1
  • Rajveer Jha
    • 1
  • V. P. S. Awana
    • 1
    Email author
  1. 1.CSIR-National Physical Laboratory, Dr. K. S. Krishnan MargNew DelhiIndia

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