Evolution of superconductivity in LaO1-xFxBiS2 prepared by high pressure technique

Abstract

Novel BiS2-based superconductors LaO1-xFxBiS2 prepared by the high pressure synthesis technique were systematically studied. It was found that the high pressure annealing strongly the lattice as compared to the LaO1-xFxBiS2 samples prepared by conventional solid state reaction at ambient pressure. Bulk superconductivity was observed within a wide F-concentration range of x = 0.2 ~ 0.7. On the basis of those results, we have established a phase diagram of LaO1-xFxBiS2.

arXiv comment11 pages, 6 figures

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Cited by in corpus (64)

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• Stabilization of high-Tc phase of BiS2-based superconductor LaO0.5F0.5BiS2 using high-pressure synthesis
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• Insulator-to-Superconductor Transition upon Electron Doping in a BiS${}_2$-Based Superconductor Sr${}_{1-x}$La${}_x$FBiS${}_2$
• Evolution of superconductivity in BiS2-based superocnductor LaO0.5F0.5Bi(S1-xSex)2
• Enhancement of thermoelectric properties by Se substitution in layered bismuth-chalcogenide LaOBiS2-xSex
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• Observation of anomalous temperature dependence of spectrum on small Fermi surfaces in a BiS2-based superconductor
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• Bulk Superconductivity Induced by In-plane Chemical Pressure Effect in Eu0.5La0.5FBiS2-xSex
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• Effect of hydrostatic pressures on the superconductivity of new BiS2 based REO0.5F0.5BiS2 (RE-La, Pr and Nd) superconductors
• Soft x-ray photoemission study of new BiS${}_2$-layered superconductor LaO${}_{1-x}$F${}_x$BiS${}_2$
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• High-Tc Phase of PrO0.5F0.5BiS2 single crystal induced by uniaxial pressure
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• Effect of yttrium substitution on the superconducting properties of the system La${}_{1-\text{x}}$Y${}_{\text{x}}$O${}_{0.5}$F${}_{0.5}$BiS${}_2$
• Localized and mixed valence state of Ce $4f$ in superconducting and ferromagnetic CeO${}_{1-x}$F${}_x$BiS${}_2$ revealed by x-ray absorption and photoemission spectroscopy
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• Normal state electronic properties of LaO${}_{1-x}$F${}_x$BiS${}_2$ superconductors