Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals

Details Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals

2010-08-05

arxiv.org/abs/1008.1026v2

Phys. Rev. B 82, 144518 (2010)

Physics

Condensed Matter

Superconductivity

6 pages, 6 figures

Scientific paper

10.1103/PhysRevB.82.144518

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.

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