Superconductivity and enhanced susceptibility in SrFe$_2$As$_2$ single crystals

ORAL

Abstract

Single crystals of SrFe$_2$As$_2$ grown using a self-flux solution method were characterized via x-ray, transport, magnetization and specific heat studies, revealing a superconducting transition at 21 K which appears far below the magnetostructural transition at 198 K as evidenced by transitions in resistivity and susceptibility. We present experiments which probe the nature of this phase and its relation to the enhancement of magnetic susceptibility in superconducting samples.

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Authors

  • S. R. Saha

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland

  • N. P. Butch

    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland

  • K. Kirshenbaum

    • Center for Nanophysics and Advanced Materials, University of Maryland at College Park
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland

  • J. Paglione

    • University of Maryland
    • Center for Nanophysics and Advanced Materials, University of Maryland
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland