Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals

Abstract

Single crystals of SrFe2-xPtxAs2 (0 < x < 0.36) were grown using the self flux solution method and characterized using x-ray crystallography, electrical transport, magnetic susceptibility, and specific heat measurements. The magnetic/structural transition is suppressed with increasing Pt concentration, with superconductivity seen over the range 0.08 < x < 0.36 with a maximum transition temperature Tc of 16 K at x = 0.16. The shape of the phase diagram and the changes to the lattice parameters are similar to the effects of other group VIII elements Ni and Pd, however the higher transition temperature and extended range of superconductivity suggest some complexity beyond the simple electron counting picture that has been discussed thus far.

6 pages, 6 figures

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Cited by in corpus (11)

• Superconductivity in Iron Compounds
• Electronic band structure, Fermi surface, and elastic properties of new 4.2K superconductor SrPtAs from first-principles calculations
• Transport Properties and Electronic Phase Diagram of Single-Crystalline Ca${}_{10}$(Pt${}_3$As${}_8$) ((Fe${}_{1-x}$Pt${}_x$)${}_2$As${}_2$)${}_5$
• Universal pair-breaking in transition metal-substituted iron-pnictide superconductors
• Specific Heat Discontinuity, deltaC, at Tc in BaFe2(As0.7P0.3)2 - Consistent with Unconventional Superconductivity
• Doping effects of Cr on the physical properties of BaFe${}_{1.9-x}$Ni${}_{0.1}$Cr${}_x$As${}_2$
• Lattice Parameters Guide Superconductivity in Iron-Arsenides
• Breakdown of Chemical Scaling for Pt-Doped CaFe2As2
• Isotropic multi-gap superconductivity in BaFe1.9Pt0.1As2 from thermal transport and spectroscopic measurements
• Crystal growth and characterization of a hole-doped iron-based superconductor Ba(Fe${}_{0.875}$Ti${}_{0.125}$)${}_2$As${}_2$
• Signature of Unconventional Superconductivity in the High Temperature Normal State Resistivity