Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals

Kevin Kirshenbaum; Shanta R. Saha; Tyler Drye; Johnpierre Paglione

doi:10.1103/PhysRevB.82.144518

Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals

Superconductivity 2010-10-21 v2 Strongly Correlated Electrons

Authors: Kevin Kirshenbaum , Shanta R. Saha , Tyler Drye , Johnpierre Paglione

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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.

Keywords

superconductivity magnetism platinum substitution SrFe2As2 single crystals phase diagram lattice parameters

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@article{arxiv.1008.1026,
  title  = {Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals},
  author = {Kevin Kirshenbaum and Shanta R. Saha and Tyler Drye and Johnpierre Paglione},
  journal= {arXiv preprint arXiv:1008.1026},
  year   = {2010}
}

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6 pages, 6 figures

Superconductivity and magnetism in platinum-substituted SrFe2As2 single crystals

Abstract

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