Structural and electronic properties of single-crystal Fe$_{1-x}$Co$_{x}$As

ORAL

Abstract

Shortly after the discovery of the iron pnictide superconductors, it was found that cobalt substitution on the iron site in the 122 ternary systems AEFe$_{2}$As$_{2}$ (AE = alkali earth) suppresses the magnetic order of the parent compounds and induces superconductivity. While transition metal substitution in the intermetallic iron arsenide superconductors is one of the most studied aspects of these materials, there is little known about the effects of substitution on the related binary system FeAs. We present transport and magnetization measurements performed on single crystals of the cobalt-substituted system Fe$_{1-x}$Co$_{x}$As, and discuss the evolution of the phase diagram of this system.

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Authors

  • K. Kirshenbaum

    University of Maryland, Physics Department, Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland, College Park, MD 20742, USA, Center for Nanophysics and Advanced Materials, University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland, University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • S. Saha

    University of Maryland, Physics Department, University of Maryland, College Park, Center for Nanophysics and Advanced Materials, University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland, University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • N. Butch

    University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • T. Drye

    University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • J. Magill

    University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • J. Paglione

    University of Maryland, College Park, University of Maryland, Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland, College Park, MD 20742, USA, Center for Nanophysics and Advanced Materials, University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland, University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • P. Zavalij

    University of Maryland, College Park, Department of Chemistry and Biochemistry