Evolution of the in-plane resistivity anisotropy in isovalenly substituted Ba(Fe$_{1-x}$Ru$_x$)$_2$As$_2$

ORAL

Abstract

Recent studies of electronic anisotropy in iron-based superconductors have revealed a dramatic asymmetry between electron and hole doped compounds [1]. A natural question is: What effect would isovalent substitution have? The BaFe$_2$As$_2$ system shows little change in its Fermi surface and carrier concentration upon Ru-doping, even at the levels far beyond the point of total suppression of the AFM state, making it a valuable system to compare against the hole and electron doped system. Here we study in-plane resistivity anisotropy in detwinned single crystals of Ba(Fe$_{1-x}$Ru$_x$)$_2$As$_2$. Polarized optical imaging was used to confirm detwinning. A quantitative comparison of our new results with the isovalently substituted BaFe$_2$(As$_{1-x}$P$_x$)$_2$ [2] system, as well as the charge doped Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ and Ba$_{1-x}$K$_x$Fe$_2$As$_2$ systems will be discussed. This work was supported by the Department of Energy Office of Science, Basic Energy Sciences under Contract No. DE-AC02-O7CH11358.\\[4pt] [1] E. C. Blomberg, \textit{et al},. Nat. Comm. \textbf{4}, 1914 (2013).\\[0pt] [2] H-.H. Kuo, \textit{et al}., Phys. Rev. B \textbf{86}, 134507 (2012).

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Authors

  • Erick C. Blomberg

    • The Ames Laboratory, Ames, IA 50011, USA

  • M.A. Tanatar

    • Ames National Laboratory
    • Ames Laboratory, US DOE, Iowa State University, Ames, Iowa 50011, U.S.A.
    • Sherbrooke University
    • The Ames Laboratory, Ames, IA 50011, USA

  • Sheng Ran

    • Iowa State University, Ames Lab
    • Ames Laboratory/ Iowa State University
    • The Ames Laboratory, Ames, IA 50011, USA
    • Ames Lab, Department of Physics, Iowa State University

  • S.L. Bud'ko

    • Ames Laboratory
    • Ames Laboratory, US DOE, Iowa State University, Ames, Iowa 50011, U.S.A.
    • Iowa State University, Ames Lab
    • Ames Laboratory/ Iowa State University
    • The Ames Laboratory, Ames, IA 50011, USA
    • The Ames Laboratory, Iowa State University, Ames, USA
    • Ames Laboratory and Dept. of Physics and Astronomy, Iowa State University

  • Paul C. Canfield

    • Ames Laboratory, US DOE, Iowa State University, Ames, Iowa 50011, U.S.A.
    • Iowa State University, Ames Lab
    • Ames Laboratory/ Iowa State University
    • Iowa State University
    • Ames Laboratory
    • Iowa State Univ
    • Ames Laboratory and Dept. of Physics, Iowa State University
    • The Ames Laboratory, Ames, IA 50011, USA
    • Ames Lab, Department of Physics, Iowa State University
    • The Ames Laboratory, Iowa State University, Ames, USA
    • Ames Laboratory and Dept. of Physics and Astronomy, Iowa State University

  • R. Prozorov

    • Ames Laboratory, Ames IA-50010
    • The Ames Laboratory, Ames, IA 50011, USA

  • Alexander Thaler

    • University of Illinois, Urbana-Champaign, IL, 61801, USA
    • University of Illinois