Non-Fermi Liquid Transport in AFe2As2 (A=K,Rb,Cs)

ORAL

Abstract

We report milliKelvin heat and charge transport measurements in high-quality single crystals of the heavily hole-doped AFe2As2 (A=K,Rb,Cs) superconductors as a function of magnetic field applied both perpendicular and parallel to the basal plane. The temperature dependence of both electrical and thermal resistivities exhibit non-Fermi-liquid behavior that is dependent on magnetic field. We compare results for all A species to each other, as well as previous results in which the non-Fermi-liquid temperature dependence of the resistivity was taken to indicate a field-tuned quantum critical point at the superconducting upper critical field.

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Presenters

  • Tristin Metz

    Univ of Maryland-College Park, Department of Physics, University of Maryland, Center for Nanophysics and Advanced Materials, University of Maryland

Authors

  • Tristin Metz

    Univ of Maryland-College Park, Department of Physics, University of Maryland, Center for Nanophysics and Advanced Materials, University of Maryland

  • Makariy Tanatar

    Iowa State University and Ames Laboratory, Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames Laboratory, Ames Laboratory and Iowa state University, Iowa State University

  • Erik Timmons

    Iowa State University and Ames Laboratory, Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames Laboratory, Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University

  • Xiangfeng Wang

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

  • T. A. Lograsso

    Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames Laboratory, Ames Laboratory, Iowa State University

  • Yong Liu

    Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames Laboratory

  • Ruslan Prozorov

    Ames Lab, Iowa State University and Ames Laboratory, Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames Laboratory, Ames Laboratory and Iowa state University, Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University

  • Johnpierre Paglione

    Center for Nanophysics and Advanced Materials , University of Maryland, CNAM, Department of Physics, University of Maryland, Univ of Maryland-College Park, Department of Physics, University of Maryland, CNAM, Department of Physics, Univ of Maryland-College Park, Univ of Maryland - College Park, College Park, MD 20742-4111, Univ of Maryland-College Park, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, Center for Nanophysics and Advanced Materials, University of Maryland, University of Maryland, College Park, University of Maryland