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