Bulk Superconductivity at 14 K in Single Crystals of Fe1+yTexSe1-x

Abstract

Resistivity, magnetic susceptibility and heat capacity measurements are reported for single crystals of Fe1+yTexSe1-x grown via a modified Bridgeman method with 0 < y < 0.15, and x= 1, 0.9, 0.75, 0. 67, 0.55 and 0.5. Although resistivity measurements show traces of superconductivity near 14 K for all x except x=1, only crystals grown with compositions near x=0.5 exhibit bulk superconductivity. The appearance of bulk superconductivity correlates with a reduction in the magnitude of the magnetic susceptibility at room temperature and smaller values of y, the concentration of Fe in the Fe(2) site.

arXiv commentSubmitted to Phys. Rev. B

References in corpus (14)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• The superconductivity at 18 K in LiFeAs system
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Extreme Sensitivity of Superconductivity to Stoichiometry in FeSe (Fe1+dSe)
• Superconductivity in iron-based F-doped layered quaternary compound Nd[O1-xFx]FeAs
• Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
• First-order magnetic and structural phase transitions in Fe${}_{1+y}$Se${}_x$Te${}_{1-x}$
• Superconductivity at 52 K in iron-based F-doped layered quaternary compound Pr[O1-xFx]FeAs
• Substitution Effects on FeSe Superconductor
• Electronic properties of single-crystalline Fe${}_{1.05}$Te and Fe${}_{1.03}$Se${}_{0.30}$Te${}_{0.70}$
• Density Functional Study of Excess Fe in Fe${}_{1+x}$Te: Magnetism and Doping
• Superconductivity at 36 K in Gadolinium-arsenide Oxides GdO${}_{1-x}$F${}_x$FeAs
• Density functional study of BaNi${}_2$As${}_2$: Electronic structure, phonons and electron-phonon superconductivity

Cited by in corpus (171)

• The Puzzle of High Temperature Superconductivity in Layered Iron Pnictides and Chalcogenides
• Superconductivity in Iron Compounds
• A review of Fe-chalcogenide superconductors: the simplest Fe-based superconductor
• Synthesis and crystal growth of Cs0.8(FeSe0.98)2: a new iron-based superconductor with Tc=27K
• New Fe-based superconductors: properties relevant for applications
• Magnetism in Fe-based superconductors
• Topological nature of FeSe${}_{0.5}$Te${}_{0.5}$ superconductor
• From (pi, 0) magnetic order to superconductivity with (pi, pi) magnetic resonance in Fe1.02(Te1-xSex)
• Charge carrier localization induced by excess Fe in the Fe1+y(Te,Se) superconductor system
• Theoretical evidence for strong correlations and incoherent metallic state in FeSe
• Iron based superconductors: magnetism, superconductivity and electronic structure
• Strong electron correlations in the normal state of FeSe0.42Te0.58
• Superconductivity at T_c ~ 14 K in Single Crystalline FeTe${}_{0.61}$Se${}_{0.39}$
• Progress in wire fabrication of iron-based superconductors
• Superconductivity in iron telluride thin films under tensile stress
• Evolution of spin excitations into the superconducting state in FeTe1-xSex
• The effect of varying Fe-content on transport properties of K intercalated iron selenide KxFe2-ySe2
• On the Structure of Vacancy Ordered Superconducting Alkali Metal Iron Selenide
• Coexistence of incommensurate magnetism and superconductivity in Fe_{1+y}Se_xTe_{1-x}
• Anisotropic superconducting properties of single-crystalline FeSe0.5Te0.5
• Magnetic-crystallographic phase diagram of superconducting parent compound Fe${}_{1+x}$Te
• Pauli-limited upper critical field in Fe1+yTe1-xSex
• Upper critical field, lower critical field and critical current density of FeTe0.60Se0.40 single crystal
• Effect of Fe excess on structural, magnetic and superconducting properties of single-crystalline Fe(1+x)Te(1-y)Se(y)
• Evidence for dominant Pauli paramagnetic effect in the upper critical fields of a FeTe0.6Se0.4 superconductor
• Interplay between magnetism and superconductivity in iron-chalcogenide superconductors: crystal growth and characterizations
• Magnetism, Superconductivity and Stoichiometry in Single Crystals of Fe1+y(Te1-xSx)z
• Systematic Comparison of Eight Substrates in the Growth of FeSe${}_{0.5}$Te${}_{0.5}$ Superconducting Thin Films
• Physical properties of FeSe${}_{0.5}$Te${}_{0.5}$ single crystals grown under different conditions
• Tuning the superconducting and magnetic properties in Fe_ySe_0.25Te_0.75 by varying the Fe-content
• Revised Phase Diagram for FeTe1-xSex system with less excess Fe atoms
• Dynamics and mechanism of oxygen annealing in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$ single crystal
• Thermodynamic phase diagram of Fe(Se${}_{0.5}$Te${}_{0.5}$) single crystals up to 28 Tesla
• Forces for Structural Optimizations in Correlated Materials within DFT+Embedded DMFT Functional Approach
• Control of tetrahedral coordination and superconductivity in FeSe0.5Te0.5 thin films
• Growth conditions, structure, and superconductivity of pure and metal-doped FeTe1-xSex single crystals
• Electronic correlations and unusual superconducting response in the optical properties of the iron-chalcogenide FeTe0.55Se0.45
• Thermally activated energy and flux flow Hall effect of Fe1+y(Te1-xSx)z
• Review of annealing effects and superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ superconductors
• Unusual Relationship between Magnetism and Superconductivity in FeTe${}_{0.5}$Se${}_{0.5}$
• The phase diagrams of iron-based superconductors: theory and experiments
• Interstitial iron tuning of the spin fluctuations in Fe1+xTe
• Interstitial Iron Controlled Superconductivity in Fe1+xTe0.7Se0.3
• Superconductivity of FeSe0.5Te0.5 Thin Films Grown by Pulsed Laser Deposition
• Transport and superconducting properties of Fe-based superconductors: SmFeAs(O1-x Fx) versus Fe1+y (Te1-x, Sex)
• A new approach for improving global critical current density in Fe(Se0.5Te0.5) polycrystalline materials
• Seebeck effect in Fe1+xTe1-ySey single crystals
• Thin Film Growth and Device Fabrication of Iron-Based Superconductors
• Correlation induced spin freezing transition in FeSe: a dynamical mean field study
• Successive phase transitions under high pressure in FeTe0.92
• Thermoelectric response of Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$: evidence for strong correlation and low carrier density
• Calorimetric Evidence of Strong-Coupling Multiband Superconductivity in Fe(Te0.57Se0.43) Single Crystal
• The magnetic and structural properties near the Lifshitz point in Fe1+xTe
• Evidence for Anisotropic Vortex Dynamics and Pauli Limitation in the Upper Critical Field of FeSe1-xTex
• Transport properties and microstructure of mono- and seven-core wires of FeSe1-xTex superconductor by Fe-diffusion powder-in-tube method
• Electron correlation in FeSe superconductor studied by bulk-sensitive photoemission spectroscopy
• Crystal Chemistry and Structural Design of Iron-Based Superconductors
• Influence of interstitial Fe to the phase diagram of Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ single crystals
• Effects of excess Fe on upper critical field and magnetotransport in Fe1+y(Te1-xSx)z
• Microstructural magnetic phases in superconducting FeTe0.65Se0.35
• Correlation-driven topological Fermi surface transition in FeSe
• Pure nematic quantum critical point accompanied by a superconducting dome
• Improvement of superconducting properties of FeSe0.5Te0.5 single crystals by Mn substitution
• Microscopic analysis of the chemical reaction between Fe(Te,Se) thin films and underlying CaF${}_2$
• Evolution from incoherent to coherent electronic states and its implications to superconductivity in FeTe1-xSex
• Specific-heat study of superconducting and normal states in FeSe1-xTex (0.6<=x<=1) single crystals: Strong-coupling superconductivity, strong electron-correlation, and inhomogeneity
• Enhancement of critical current density and mechanism of vortex pinning in H${}^{+}$-irradiated FeSe single crystal
• Anomalous Temperature Dependence of the Superfluid Density Caused by Dirty-to-Clean Crossover in FeSe${}_{0.4}$Te${}_{0.6}$ Single Crystals
• Bulk Synthesis of Iron-based Superconductors
• Magnetic excitations of Fe_{1+y}Se_xTe_{1-x} in magnetic and superconductive phases
• Enhancement of Transition Temperature in FexSe0.5Te0.5 Film via Iron Vacancies
• Large, Homogeneous, and Isotropic Critical Current Density in Oxygen-Annealed Fe1+yTe0.6Se0.4 Single Crystal
• Low-temperature Synthesis of FeTe0.5Se0.5 Polycrystals with a High Transport Critical Current Density
• Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor ${\mathrm{FeTe}}_{0.55}{\mathrm{Se}}_{0.45}$
• Thermoelectric properties of iron-based superconductors and parent compounds
• Synthesis and Physical Properties of FeSe1/2Te1/2 Superconductor
• Effects of Annealing under Tellurium Vapor for Fe${}_{1.03}$Te${}_{0.8}$Se${}_{0.2}$ Single Crystals
• Effect of electron correlations on the electronic structure and phase stability of FeSe upon lattice expansion
• Spin anisotropy of the resonance in superconducting FeSe0.5Te0.5
• Superconducting Fe(1+delta)Se(1-x)Te(x) thin films: Growth, characterization and properties
• Disorder-driven electronic localization and phase separation in superconducting Fe1+yTe0.5Se0.5 single crystals
• Magnetic phase diagram of Fe1.1Te1-xSex: A comparative study with the stoichiometric superconducting FeTe1-xSex system
• FeTe${}_{0.55}$Se${}_{0.45}$: a multiband superconductor in the clean and dirty limit
• Soft striped magnetic fluctuations competing with superconductivity in Fe_{1+x}Te
• Evolution of Superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ Annealed in Te Vapor
• Superconductivity and magnetism in RbxFe2-ySe2: Impact of thermal treatment on mesoscopic phase separation
• Correlation strength, Lifshitz transition and the emergence of a two- to three-dimensional crossover in FeSe under pressure
• Coupling of electronic and magnetic properties in Fe1+y(Te1-xSex)
• Inhomogeneous superconductivity induced by interstitial Fe deintercalation in oxidizing-agent-annealed and HNO3-treated Fe1+y(Te1-xSex)
• Magnetoelastic Effects in Iron Telluride
• Bulk Superconductivity in Fe1+yTe0.6Se0.4 Induced by Removal of Excess Fe
• Three Dimensional Superconductivity in FeSe with Tczero Up to 10.9 K Induced by Internal Strain
• Spin fluctuations and superconductivity in powders of Fe_1+xTe_0.7Se_0.3 as a function of interstitial iron concentration
• Fabrication of FeSe1-x superconducting films with bulk properties
• Two-electronic component behavior in the multiband FeSe${}_{0.42}$Te${}_{0.58}$ superconductor
• Phonon anomalies in some iron-telluride materials
• LDA+DMFT approach to ordering phenomena and the structural stability of correlated materials
• Influence of substrate type on transport properties of superconducting FeSe0.5Te0.5 thin films
• Hall effect of FeTe and Fe(Se_1-x_Te_x_) thin films
• Pairing symmetry and topological surface state in iron-chalcogenide superconductors
• Mobility analysis of FeTe thin films
• Achieving the depairing limit along $c$ axis in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ single crystals
• Effect of Vacuum Annealing on Superconductivity in Fe(Se,Te) Single Crystals
• How robust the global measurements of London penetration depth are: the case of Fe(Te${}_{1-x}$,Se${}_x$)
• Orbital Selective Mott Transition Effects and Non-Trivial Topology of Iron Chalcogenide
• Evolution of superconducting and transport properties in annealed FeTe${}_{1-x}$Se${}_x$ (0.1 $\le$ $x$ $\le$ 0.4) multiband superconductors
• Superconductivity in PbO-type Fe chalcogenides
• Disorder effects in pnictides : a tunneling spectroscopy study
• High-pressure synthesis and the enhancement of the superconducting properties of FeSe0.5Te0.5
• The influence of the in-plane lattice constant on the superconducting transition temperature of FeSe0.7Te0.3 thin films
• Correlated electronic structure, orbital-dependent correlations, and Lifshitz transition in tetragonal FeS
• Competing spin density wave, collinear, and helical magnetism in Fe1+xTe
• Disorder-dependent superconducting phase-diagram at high magnetic fields in Fe${}_{1+y}$Se${}_x$Te${}_{1-x}$ ($x\sim 0.4$)
• Magnetic order tuned by Cu substitution in Fe1.1-zCuzTe
• Synthesis, phase stability, structural and physical properties of 11-type iron chalcogenides
• Pressure effects on FeSe family superconductors
• Effect of nominal substitution of transition metals for excess Fe in Fe_{1+x}Se superconductor
• Transition-Metal Substitutions in Iron Chalcogenides
• Doping effects of Co, Ni, and Cu in FeTe0.65Se0.35 single crystals
• Anisotropic thermal expansion of Fe1.06Te and FeTe0.5Se0.5 single crystals
• Superconducting Symmetry Studied from Impurity Effects in Single-Crystal Fe1-yMySe0.3Te0.7 (M = Co, Ni, Zn)
• Optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45
• On the role of chalcogen vapor annealing in inducing bulk superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Observation of robust edge superconductivity in Fe(Se,Te) under strong magnetic perturbation
• Local magnetism, magnetic order and spin freezing in the 'nonmetallic metal' FeCrAs
• Brief review on iron-based superconductors: are there clues for unconventional superconductivity?
• Intrinsic pinning by naturally occurring correlated defects in FeSe${}_{\text{1-x}}$Te${}_{\text{x}}$ superconductors
• Direct observation of quantum anomalous vortex in Fe(Se,Te)
• Doping dependence of the spin excitations in Fe-based superconductors Fe1+yTe1-xSex
• Nano-scale Inhomogeneous Superconductivity in Fe(Te1-xSex) Probed by Nanostructure-transport
• Magnetic properties of FeSe superconductor
• Evidence for a two-fold symmetric superconducting gap in a monolayer of FeSe${}_{0.5}$Te${}_{0.5}$ on a topological insulator
• Thermal conductivity and annealing effects in the iron-based superconductor FeSe${}_{0.3}$Te${}_{0.7}$
• Fast synthesis of Fe1.1Se1-xTex superconductors in a self-heating and furnace-free way
• Pressure effects on strained FeSe0.5Te0.5 thin films
• From mean-field localized magnetism to itinerant spin fluctuations in the "Non-metallic metal" - FeCrAs
• Hydrogen in superconductors
• Cometal addition effect on superconducting properties and granular behaviours of polycrystalline FeSe0.5Te0.5
• Pressure effect on superconductivity in FeSe0.5Te0.5
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Anisotropy of the magnetic properties of the FeTe0.65Se0.35 superconductor
• Magnetic surface reconstruction in the van-der-Waals antiferromagnet Fe${}_{1+x}$Te
• Interplay of superconductivity and magnetism in FeSe${}_{1-x}$Te${}_x$ compounds. Pressure effects
• Lattice Parameters Guide Superconductivity in Iron-Arsenides
• A flat band at the chemical potential of a Fe1.03Te0.94S0.06 superconductor observed by angle-resolved photoemission spectroscopy
• Bulk superconductivity in FeTe${}_{1-x}$Se${}_x$ via physicochemical pumping of excess iron
• Interfacially enhanced superconductivity in Fe(Te,Se)/Bi4Te3 heterostructures
• Thickness-induced crossover from strong to weak collective pinning in exfoliated FeTe${}_{0.6}$Se${}_{0.4}$ thin films at 1 T
• Anomalous heat capacity and X-ray photoelectron spectroscopy of Superconducting FeSe1/2Te1/2
• Effect of Pb addition on microstructure, transport properties and the critical current density in a polycrystalline FeSe0.5Te0.5
• Comparison of Gd addition effect on the superconducting properties of FeSe0.5Te0.5 bulks under ambient and high-pressure conditions
• Neutron scattering patterns show Superconductivity in FeTe0.5Se0.5 likely results from itinerant electron fluctuations
• Pressure induced renormalization of energy scales in the unconventional superconductor FeTe0.6Se0.4
• High-field irreversible moment reorientation in the antiferromagnet Fe${}_{1.1}$Te
• Superconducting properties of FeSe0.5Te0.5 under high pressure
• Band Engineering of Dirac cones in Iron Chalcogenides
• Interplay of structure, magnetism, and superconductivity in Se substituted iron telluride with excess Fe
• Superconducting Gap and Symmetry in FeSe_1-x_Te_x_ Studied by Specific Heat in Magnetic Fields
• Identifying materials with charge-spin physics using charge-spin susceptibility computed from first principles
• High-pressure growth effect on the properties of high-Tc iron-based superconductors: A short review
• Fe${}_{1+y}$Te${}_x$Se${}_{1-x}$: a delicate and tunable Majorana material
• Nodeless superconducting gaps in Ca${}_{10}$(Pt${}_{4-\delta }$As${}_8$)((Fe${}_{1-x}$Pt${}_x$)${}_2$As${}_2$)${}_5$ probed by quasiparticle heat transport
• Acoustic lattice instabilities at the magneto-structural transition in Fe${}_{1.057(7)}$Te
• Growth and Characterization of Fe0.95Se0.6Te0.4 Single Crystal
• Short-lived electron excitations in $\mathrm{FeT}{\mathrm{e}}_{1-\mathrm{x}}\mathrm{S}{\mathrm{e}}_{\mathrm{x}}$ as revealed by microwave absorption
• Synthesis and characterizations of arsenic doped FeSe bulks
• Vacancy Order and Physical Properties of a Ternary Compound Fe0.68Pd0.80Te with an α-Fe1+xTe-Type Structure
• Depairing critical current density and the vortex-free state in FeSe nanobridges
• Electronic phase diagram in Te-annealed superconducting FeTe${}_{1-x}$Se${}_x$ revealed by magnetic susceptibility
• The energy gap of the compound FeSe0.5Te0.5 determined by specific heat and point contact spectroscopy
• On the bad metallicity and phase diagrams of Fe${}_{1+\delta }X$ ($X$ =Te, Se, S, solid solutions): an electrical resistivity study