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.
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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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Goyal, R., Tiwari, B., Jha, R. et al. Specific Heat of Robust Nb2PdS5 Superconductor. J Supercond Nov Magn 28, 1427–1432 (2015). https://doi.org/10.1007/s10948-015-2961-5
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DOI: https://doi.org/10.1007/s10948-015-2961-5