Physical properties of Rh substituted CaFe$_{2}$As $_{2}$ tuned by annealing/quenching

ORAL

Abstract

Our previous work on CaFe$_{2}$As$_{2}$ single crystal grown out of FeAs flux has shown that a process of annealing and quenching can be used as an additional control parameter which can tune the ground state of CaFe$_{2}$As$_{2}$ systematically. We have also shown that CaFe$_{2}$As$_{2}$ is very pressure sensitive. Therefore, unlike the BaFe$_{2}$As$_{2}$ system, the effect of 4d transition metal substitution on CaFe$_{2}$As$_{2}$ is expected to be largely different from that of 3d transition metal substitution (e.g. cobalt or nickel substitution). In this talk we will present results of measurements on a Rh substituted CaFe$_{2}$As$_{2}$ system with different annealing/quenching temperatures. Phase diagrams with substitution level and annealing/quenching temperature as independent parameters are constructed and compared with that of other transition metal substitutions.

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Authors

  • 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