Superconductivity induced by doping Ru in SrFe2-xRuxAs2

Abstract

Using one-step solid state reaction method, we have successfully synthesized the superconductor SrFe1-xRuxAs. X-ray diffraction indicates that the material has formed the ThCr2Si2-type structure with a space group I4/mmm. The systematic evolution of the lattice constants demonstrates that the Fe ions are successfully replaced by the Ru. By increasing the doping content of Ru, the spin-density-wave (SDW) transition in the parent compound is suppressed and superconductivity emerges. The maximum superconducting transition temperature is found at 13.5 K with the doping level of x = 0.7. The temperature dependence of DC magnetization confirms superconducting transitions at around 12 K. Our results indicate that similar to non-isoelectronic substitution, isoelectronic substitution contributes to changes in both the carrier concentration and internal pressure, and superconductivity could be induced by isoelectronic substitution.

14 pages, 4 figures

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Cited by in corpus (13)

• Superconductivity in Iron Compounds
• Magnetism in Fe-based superconductors
• Physical and magnetic properties of Ba(Fe${}_{1-x}$Ru${}_x$)${}_2$As${}_2$ single crystals
• Magnetic ordering and structural distortion in Ru doped BaFe2As2 single crystals studied by Neutron and X-ray diffraction
• Isoelectronic Ru substitution at Fe-site in Sm(Fe1-xRux)As(O0.85F0.15) compound and its effects on structural, superconducting and normal state properties
• Phosphor induced significant hole-doping in ferropnictide superconductor BaFe2(As(1-x)Px)2
• Suppression of spin density wave by isoelectronic substitution in PrFe(1-x)Ru(x)AsO
• Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals
• Superfluid density and superconducting gaps of RbFe_{2}As_{2} as a function of hydrostatic pressure
• Effect of Ni-doping on magnetism and superconductivity in Eu0.5K0.5Fe2As2
• Superconductivity induced by doping Rh in CaFe2-xRhxAs2
• Superconductivity in SmFe1-xMxAsO (M = Co, Rh, Ir)
• 75As NMR probe of antiferromagnetic fluctuations in Ba(Fe1-xRux)2As2