Superconducting properties of novel BiSe${}_2$-based layered LaO${}_{1-x}$F${}_x$BiSe${}_2$ single crystals

Abstract

F-doped LaOBiSe${}_2$ superconducting single crystals with typical size of 2$\times$4$\times$0.2 mm${}^3$ are successfully grown by flux method and the superconducting properties are studied. Both the superconducting transition temperature and the shielding volume fraction are effectively improved with fluorine doping. The LaO${}_{0.48}$F${}_{0.52}$BiSe${}_{1.93}$ sample exhibits zero-resistivity at 3.7 K, which is higher than that of the LaO${}_{0.5}$F${}_{0.5}$BiSe${}_2$ polycrystalline sample (2.4K). Bulk superconductivity is confirmed by a clear specific-heat jump at the associated temperature. The samples exhibit strong anisotropy and the anisotropy parameter is about 30, as estimated by the upper critical field and effective mass model

arXiv comment5 pages, 5 figures, 2 tables, accepted for publication in Europhysics Letter

References in corpus (19)

• Superconductivity in Iron Compounds
• To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress Report
• Enhancement of superconducting transition temperature of FeSe by intercalation of a molecular spacer layer
• Superconductivity in novel BiS2-based layered superconductor LaO1-xFxBiS2
• Novel BiS2-based layered superconductor Bi4O4S3
• Superconductivity Appears in the Vicinity of an Insulating-Like Behavior in CeO${}_{1-x}$F${}_x$BiS${}_2$
• Chiral d-wave superconductivity in doped graphene
• Superconductivity induced by La doping in Sr1-xLaxFBiS2 system
• Superconductivity induced by electron doping in the system La1-xMxOBiS2 (M = Ti, Zr, Hf, Th)
• Evolution of superconductivity in LaO1-xFxBiS2 prepared by high pressure technique
• Pressure-induced enhancement of superconductivity and suppression of semiconducting behavior in Ln(O0.5F0.5)BiS2 (Ln = La, Ce) compounds
• Structural Analysis and Superconducting Properties of F-Substituted NdOBiS2 Single Crystals
• Superconductivity at 5K in NdO0.5F0.5BiS2
• New Li-Ethylenediamine-Intercalated Superconductor Li${}_x$(C${}_2$H${}_8$N${}_2$)${}_y$Fe${}_{2-z}$Se${}_2$ with $T_c$ = 45 K
• Growth and superconducting properties of F-substituted ROBiS2 (R = La, Ce, Nd) single crystals
• Superconductivity in a new layered bismuth oxyselenide: LaO0.5F0.5BiSe2
• Unexpected Giant Superconducting Fluctuation and Anomalous Semiconducting Normal State in NdO1-xFxBi1-yS2 Single Crystals
• Synthesis, crystal structure and magnetism of beta-Fe1.00(2)Se1.00(3) single crystals
• Insulator-to-Superconductor Transition upon Electron Doping in a BiS${}_2$-Based Superconductor Sr${}_{1-x}$La${}_x$FBiS${}_2$

Cited by in corpus (5)

• Material Development and Physical Properties of BiS2-Based Layered Compounds
• Superconductivity and Local Inversion-Symmetry Breaking
• Synthesis and properties of SmO0.5F0.5BiS2 and enhancement in Tc in La1-ySmyO0.5F0.5BiS2
• Superconducting gap symmetry of the BiS${}_2$-based superconductor LaO${}_{0.5}$F${}_{0.5}$BiSSe elucidated through specific heat measurement
• Anisotropic two-gap superconductivity and the absence of a Pauli paramagnetic limit in single-crystalline LaO${}_{0.5}$F${}_{0.5}$BiS${}_2$