Enhancement of Tc in BiS2 based superconductors NdO0.7F0.3BiS2 by substitution of Pb for Bi

Abstract

We succeed in enhancement of a superconducting transition temperature (Tc) for NdO0.7F0.3BiS2 single crystal by partial substitution of Pb for Bi. The Tc increases with increasing Pb concentration until 6%. The maximum Tczero is 5.6 K, which is the highest value among BiS2 based superconductors synthesized under an ambient pressure. Pb substitution for Bi induces lattice shrinkage along the c axis. These results reflect that superconductivity in this system is responsive to the lattice strain.

22 pages, 6 figures

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Cited by in corpus (5)

• Material Development and Physical Properties of BiS2-Based Layered Compounds
• Effect of Lead Substitution on LaO0.5F0.5BiS2
• Growth and superconducting properties of Cd-doped La(O,F)BiS2 single crystals
• Pb Substitution Effects on Lattice and Electronic System of the BiS2-based Superconductors La(O F)BiS2
• Suppression of superconductivity by Sb-substitution into CeOBiS2 single crystals