Structural Analysis and Superconducting Properties of F-Substituted NdOBiS2 Single Crystals

Abstract

F-substituted NdOBiS2 superconducting single crystals were grown using CsCl/KCl flux. This is the first example of the single-crystal growth of a BiS2-based superconductor. The obtained single crystals had a plate-like shape with a size of 1-2 mm and a well-developed ab-plane. The crystal structure of the grown crystals was determined by single-crystal X-ray diffraction analysis to be the tetragonal space group P4/nmm (#129) with a = 3.996(3) A and c = 13.464(6) A. The chemical formula of the grown crystals was approximately Nd0.98(0.06)O0.7(0.1)F0.3(0.1)Bi0.98(0.04)S2, and Cs, K, and Cl were not detected in the grown crystals by electron probe microanalysis. The grown crystals had a critical temperature of approximately 5 K. The superconducting anisotropy of the single crystals was estimated to be about 30 from the effective mass model and the upper critical field.

27 pages, 9 figures

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• Superconductivity Appears in the Vicinity of an Insulating-Like Behavior in CeO${}_{1-x}$F${}_x$BiS${}_2$
• Superconductivity of F-substituted LnOBiS2 (Ln = La, Ce, Pr, Nd, Yb) compounds
• Superconductivity induced by La doping in Sr1-xLaxFBiS2 system
• Synthesis, crystal structure and magnetism of beta-Fe1.00(2)Se1.00(3) single crystals

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• Electronic Structure of Single Crystalline NdO${}_{0.5}$F${}_{0.5}$BiS${}_2$ Studied by Angle-resolved Photoemission Spectroscopy
• Crystal structures of LaO1-xFxBiS2 (x~0.23, 0.46): effect of F doping on distortion of Bi-S plane
• Unconventional superconductivity in the BiS${}_2$-based layered superconductor NdO${}_{0.71}$F${}_{0.29}$BiS${}_2$
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• Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS${}_2$
• Synthesis and properties of SmO0.5F0.5BiS2 and enhancement in Tc in La1-ySmyO0.5F0.5BiS2
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• Superconductivity in CeOBiS2 with cerium valence fluctuation
• Conventional s-wave superconductivity in BiS2-based NdO0.71F0.29BiS2 revealed by thermal transport measurements
• The effect of exceptionally high fluorine doping on the anisotropy of single crystalline SmFeAsO1-xFx
• Superconducting and magneto-transport properties of BiS2 based superconductor PrO1-xFxBiS2 (x = 0 to 0.9)
• Superconductivity and its Enhancement under High Pressure in "F-free" Single Crystals of CeOBiS${}_2$
• Growth and superconducting anisotropies of F-substituted LaOBiSe2 single crystals
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• High-Tc Phase of PrO0.5F0.5BiS2 single crystal induced by uniaxial pressure
• C-axis electrical resistivity of PrO${}_{1-a}$F${}_a$BiS${}_2$ single crystals
• Electron-Phonon Superconductivity in LaO${}_{0.5}$F${}_{0.5}$BiSe${}_2$
• Anisotropic upper critical field of BiS2-based superconductor LaO0.5F0.5BiS2
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• Prediction of the High Thermoelectric Performance of Pnictogen Dichalcogenide Layered Compounds with Quasi-One-Dimensional Gapped Dirac-like Band Dispersion
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• Pressure Tuned Enhancement of Superconductivity and Change of Ground State Properties in LaO0.5F0.5BiSe2 Single Crystals
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• Bulk superconductivity in single phase Bi3O2S3
• Effect of Se doping in recently discovered layered Bi4O4S3 Superconductor
• Superconducting properties of novel BiSe${}_2$-based layered LaO${}_{1-x}$F${}_x$BiSe${}_2$ single crystals
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• Growth and characterization of R(O,F)BiS2 (R = La, Ce, Pr, Nd) superconducting single crystals
• Charge Fluctuations in the NdO${}_{1-x}$F${}_x$BiS${}_2$ Superconductors
• Pressure-induced Insulator to Metal Transition of Mixed Valence Compound Ce(O,F)SbS${}_2$
• Superconductivity and abnormal pressure effect in Sr0.5La0.5FBiSe2 superconductor
• Anomalous impact of hydrostatic pressure on superconductivity of polycrystalline LaO0.5F0.5BiSe2
• Superconductivity of Electron-Doped NdOBiS2 by Substitution of Mixed-Valence Ce ions
• Growth of superconducting Sm(O,F)BiS2 single crystals
• Observation of supermodulation in LaO0.5F0.5BiSe2 by scanning tunneling microscopy and spectroscopy
• Upper critical magnetic field of $Ln$O${}_{0.5}$F${}_{0.5}$BiS${}_2$ ($Ln$ = La, Nd) superconductors at ambient and high pressure
• Raman scattering in superconducting NdO1-xFxBiS2 crystals
• Growth and characterization of (La,Ce)OBiS2 single crystals
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• Effects of equivalent composition on superconducting properties of high-entropy REOBiS${}_2$ (RE = La, Ce, Pr, Nd, Sm, Gd) single crystals
• Growth and transport properties under high pressure of PrOBiS2 single crystals
• Growth and Characterization of Superconducting Bulk Crystal [(SnSe)${}_{1+\delta }$]${}_m$(NbSe${}_2$) Misfit Layer Compounds
• Growth and superconducting properties of Cd-doped La(O,F)BiS2 single crystals
• Suppression of superconductivity by Sb-substitution into CeOBiS2 single crystals
• The upper critical field in the BiCh2-based superconductors CeOBiS1.7Se0.3 and PrO0.5F0.5BiS2-xSex (x = 0, 0.3)
• Investigation of superconductivity in Ce-doped (La,Pr)OBiS2 single crystals
• Superconducting phase diagram of Sb and Se substitution in CeOBiS2 single crystals