Specific Heat of Robust Nb2PdS5 Superconductor
- 286 Downloads
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.
KeywordsSuperconductivity Magneto transport Heat capacity
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.
- 7.Zhou, N., Xu, X., Wang, J.R., Yang, J.H., Li, Y.K., Guo, Y., Yang, W.Z., Niu, C.Q., Chen, B., Cao, C., Dai, J.: Controllable spin-orbit coupling and its influence on the upper critical field in the chemically doped quasi-one-dimensional Nb2PdS5 superconductor. Phys. Rev. B 90, 094520 (2014)CrossRefADSGoogle Scholar