Superconductivity in oxygen-annealed FeTe1-xSx single crystal

Abstract

We investigated the S-doping-driven phase transition from antiferromagnetic to superconducting in FeTe1-xSx single crystals. The partial substitution of Te by S suppresses antiferromagnetism in Fe-square lattice. Superconductivity is induced by oxygen annealing for only FeTe1-xSx in which the long-range magnetic ordering is suppressed. To realize superconductivity in FeTe1-xSx, both S concentration enough to suppress antiferromagnetism and oxygen annealing are required. Anisotropy of superconductivity in oxygen-annealed FeTe0.886S0.114 was estimated to be 1.17.

arXiv comment14 pages, 7 figures

References in corpus (13)

• The crystal structure of FeSe0.44Te0.56
• Anion height dependence of Tc for the Fe-based superconductor
• A review of Fe-chalcogenide superconductors: the simplest Fe-based superconductor
• Superconductivity in S-substituted FeTe
• Charge carrier localization induced by excess Fe in the Fe1+y(Te,Se) superconductor system
• Density Functional Study of Excess Fe in Fe${}_{1+x}$Te: Magnetism and Doping
• Magnetism, Superconductivity and Stoichiometry in Single Crystals of Fe1+y(Te1-xSx)z
• Evidence of local structural inhomogeneity in FeSe(1-x)Te(x) from extended x-ray absorption fine structure
• Evolution of superconductivity by oxygen annealing in FeTe0.8S0.2
• Moisture-induced superconductivity in FeTe0.8S0.2
• Effects of excess Fe on upper critical field and magnetotransport in Fe1+y(Te1-xSx)z
• Magnetic phase diagram of Fe1.1Te1-xSex: A comparative study with the stoichiometric superconducting FeTe1-xSex system
• Weak superconducting fluctuations and small anisotropy of the upper critical fields in an Fe1.05Te0.85Se0.15 single crystal

Cited by in corpus (15)

• Interplay between magnetism and superconductivity in iron-chalcogenide superconductors: crystal growth and characterizations
• Physics and chemistry review of layered chalcogenide superconductors
• Thin Film Growth and Device Fabrication of Iron-Based Superconductors
• Evolution of two-step structural phase transition in Fe1+dTe detected by low-temperature x-ray diffraction
• Inhomogeneous superconductivity induced by interstitial Fe deintercalation in oxidizing-agent-annealed and HNO3-treated Fe1+y(Te1-xSex)
• Superconductivity in PbO-type Fe chalcogenides
• Importance of structural distortions in enhancement of transition temperature in FeSe${}_{1-x}$Te${}_x$ superconductors
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• A flat band at the chemical potential of a Fe1.03Te0.94S0.06 superconductor observed by angle-resolved photoemission spectroscopy
• Inducement of superconductivity in Fe(Te,S) by sulfuric acid treatment
• Anisotropic pressure effects on superconductivity in Fe1+yTe1-xSx
• Preparation of Thin Crystals of FeTe1-xSx Using the Scotch-Tape Method
• Evolution of tetragonal phase in the FeSe wire fabricated by a novel chemical-transformation PIT process
• Evolution of structure, magnetic and transport properties of Fe${}_{1-x}$Mn${}_x$Se
• Removal of excess iron by annealing processes and emergence of bulk superconductivity in sulfur-substituted FeTe