Superconductivity in S-substituted FeTe

Abstract

We have successfully synthesized a new superconducting phase of FeTe1-xSx with a PbO-type structure. It has the simplest crystal structure in iron-based superconductors. Superconducting transition temperature is about 10 K at x = 0.2. The upper critical field Hc2 was estimated to be ~70 T. The coherent length was calculated to be ~2.2 nm. Because FeTe1-xSx is composed of nontoxic elements, this material is a candidate for applications and will activate more and more research on iron-based superconductor.

13 pages, 10 figures

References in corpus (5)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Superconductivity close to magnetic instability in Fe(Se1-xTex)0.82
• Pressure induced superconductivity in CaFe${}_2$As${}_2$

Cited by in corpus (6)

• Substitution Effects on FeSe Superconductor
• Fabrication of the iron-based superconducting wire using Fe(Se, Te)
• Doping Driven ($\pi ,0$) Nesting and Magnetic Properties of Fe${}_{1+x}$Te Superconductors
• Successive phase transitions under high pressure in FeTe0.92
• Density Functional Study of the Over-Doped Iron Chalcogenide: TlFe${}_2$Se${}_2$ with ThCr${}_2$Si${}_2$ structure
• Vortex state in iron-based superconductors with collinear antiferromagnetic cores