In-plane chemical pressure essential for superconductivity in BiCh2-based (Ch: S, Se) layered structure

Abstract

BiCh2-based superconductors (Ch: S, Se) are a new series of layered superconductor. However, mechanisms for the emergence of superconductivity in BiCh2-based superconductors have not been clarified. In this study, we have investigated crystal structure of two series of optimally-doped BiCh2-based superconductors, Ce1-xNdxO0.5F0.5BiS2 and LaO0.5F0.5Bi(S1-ySey)2, using powder synchrotron x-ray diffraction in order to reveal the relationship between crystal structure and superconducting properties of the BiCh2-based family. We have found that an enhancement of in-plane chemical pressure would commonly induce bulk superconductivity in both systems. Furthermore, we have revealed that superconducting transition temperature for REO0.5F0.5BiCh2 superconductors could universally be determined by degree of in-plane chemical pressure.

18 pages, 4 figures, two supplementary information (Figure S1 and Table S1)

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Cited by in corpus (48)

• Material Development and Physical Properties of BiS2-Based Layered Compounds
• Superconductivity in REO0.5F0.5BiS2 with high-entropy-alloy-type blocking layers
• Synthesis of RE123 high-Tc superconductors with a high-entropy-alloy-type RE site
• Improvement of superconducting properties by high mixing entropy at blocking layers in BiS2-based superconductor REO0.5F0.5BiS2
• Evolution of Anisotropic Displacement Parameters and Superconductivity with Chemical Pressure in BiS2-Based REO0.5F0.5BiS2 (RE = La, Ce, Pr, and Nd)
• Intrinsic Phase Diagram of Superconductivity in the BiCh2-based System Without In-plane Disorder
• Indication of unconventional superconductivity in layered bismuth chalcogenide superconductor LaO0.6F0.4Bi(S,Se)2 revealed by Se isotope effect
• Compositional and temperature evolution of crystal structure of new thermoelectric compound LaOBiS2-xSex
• Bulk Superconductivity Induced by In-plane Chemical Pressure Effect in Eu0.5La0.5FBiS2-xSex
• Superconducting gap symmetry of the BiS${}_2$-based superconductor LaO${}_{0.5}$F${}_{0.5}$BiSSe elucidated through specific heat measurement
• Superconductivity and its Enhancement under High Pressure in "F-free" Single Crystals of CeOBiS${}_2$
• Electronic Origins of Large Thermoelectric Power Factor of LaOBiS2-xSex
• Crystal structure, site selectivity, and electronic structure of layered chalcogenide LaOBiPbS3
• Superconductivity in layered Oxychalcogenide La2O2Bi3AgS6
• Strong bilayer coupling induced by the symmetry breaking in the monoclinic phase of BiS${}_2$-based superconductors
• Superconductivity in HEA-type compounds
• Synthesis, Crystal Structure, and Thermoelectric Properties of Layered Antimony Selenides REOSbSe2 (RE = La, Ce)
• Bulk Superconductivity Induced by Se Substitution in BiCh2-Based Layered Compounds Eu0.5Ce0.5FBiS2-xSex
• Effect of Lead Substitution on LaO0.5F0.5BiS2
• Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors
• Superconductivity phase diagram of Se-substituted CeO0.5F0.5Bi(S1-xSex)2
• Superconductivity in La1-xCexOBiSSe: carrier doping by mixed valence of Ce ions
• Possible pairing mechanism switching driven by structural symmetry breaking in BiS2-based layered superconductors
• Superconductivity of Electron-Doped NdOBiS2 by Substitution of Mixed-Valence Ce ions
• Growth of superconducting Sm(O,F)BiS2 single crystals
• Anisotropic superconductivity in La(O,F)BiSeS crystals revealed by field-angle dependent Andreev reflection spectroscopy
• Growth and characterization of (La,Ce)OBiS2 single crystals
• Upper critical magnetic field of $Ln$O${}_{0.5}$F${}_{0.5}$BiS${}_2$ ($Ln$ = La, Nd) superconductors at ambient and high pressure
• Synchrotron powder X-ray diffraction and structural analysis of Eu0.5La0.5FBiS2-xSex
• Lattice Anharmonicity in BiS2-Based Layered Superconductor RE(O,F)BiS2 (RE = La, Ce, Pr, Nd)
• Effects of equivalent composition on superconducting properties of high-entropy REOBiS${}_2$ (RE = La, Ce, Pr, Nd, Sm, Gd) single crystals
• Bulk superconductivity induced by Se substitution in self-doped BiCh2-based compound CeOBiS2-xSex
• High-pressure effects on superconducting properties and crystal structure of Bi-based layered superconductor La2O2Bi3Ag0.6Sn0.4S6
• Pressure-induced superconductivity in layered pnictogen diselenide NdO${}_{0.8}$F${}_{0.2}$Sb${}_{1-x}$Bi${}_x$Se${}_2$ (x = 0.3 and 0.7)
• Investigation of superconducting properties and possible nematic superconductivity in self-doped BiCh2-based superconductor CeOBiS1.7Se0.3
• Improvement of superconducting properties by chemical pressure effect in Eu-doped La2-xEuxO2Bi3Ag0.6Sn0.4S6
• Pressure tuning of localization and superconductivity in LaOPbBiS${}_3$ and La${}_2$O${}_2$Bi${}_3$AgS${}_6$
• Superconductivity in Se-doped La2O2Bi2Pb2S6-xSex with a Bi2Pb2Ch4-type thick conducting layer
• Investigation of in-plane anisotropy of c-axis magnetoresistance for BiCh2-based layered superconductor NdO0.7F0.3BiS2
• Effect of Indium doping on the superconductivity of layered oxychalcogenide La2O2Bi3Ag1-xInxS6
• Bulk superconductivity in La2O2M4S6-type layered oxychalcogenide La2O2Bi3Ag0.6Sn0.4S5.7Se0.3
• Pb Substitution Effects on Lattice and Electronic System of the BiS2-based Superconductors La(O F)BiS2
• Fluorine solubility and superconducting properties of Sm(O,F)BiS${}_2$ single crystals
• Crystal Structure and Thermoelectric Transport Properties of As-Doped Layered Pnictogen Oxyselenides NdO0.8F0.2Sb1-xAsxSe2
• Evaluation of insulating behavior by Pb Substitution and Pressure-Induced Superconductivity in La2O2Bi3-xPb1+xS6
• The upper critical field in the BiCh2-based superconductors CeOBiS1.7Se0.3 and PrO0.5F0.5BiS2-xSex (x = 0, 0.3)
• Superconducting phase diagram of Sb and Se substitution in CeOBiS2 single crystals
• Investigation of superconductivity in Ce-doped (La,Pr)OBiS2 single crystals