Specific heat under pressure on selected iron-pnictide superconductors

ORAL

Abstract

The phase diagrams of iron-pnictide superconductors manifest a complex interplay of superconductivity, magnetism and structure which can typically be tuned by external tuning parameters, such as pressure. In this contribution, we report a study of the specific heat under pressure on selected iron-pnictide superconductors, such as FeSe, as well as pure and Co-doped BaFe2As2. We will compare pressure-dependent phase diagrams, as well as provide further characterization of the superconducting properties. The latter will, in particular, include a discussion of the evolution of the specific heat jump sizes at the superconducting transition with pressure.

*This work was carried out at Iowa State University and supported by Ames Laboratory, US DOE, under Contract No. DE-AC02- 07CH11358. L. X. was supported, in part, by the W. M. Keck Foundation.

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Presenters

  • Elena Gati

    • Ames Laboratory/Iowa State University
    • Institute of Physics, Goethe-University Frankfurt

Authors

  • Elena Gati

    • Ames Laboratory/Iowa State University
    • Institute of Physics, Goethe-University Frankfurt

  • Gil Drachuk

    • Ames Laboratory/Iowa State University

  • Li Xiang

    • Department of Physics, Iowa State University, Ames Laboratory, Ames, Iowa 50011, USA
    • Ames Laboratory/Iowa State University
    • Physics, Iowa State University/Ames Laboratory
    • Iowa State University and Ames Laboratory

  • Anna Boehmer

    • Ames Laboratory/Iowa State University
    • Ames Laboratory and Dept. of Phys. and Astro.,, Iowa State Univ.
    • Institut für Festkörperphysik, Karlsruhe Institute of Technology

  • Sergey Budko

    • Iowa State University
    • Department of Physics, Iowa State University, Ames Laboratory, Ames, Iowa 50011, USA
    • Ames Laboratory, Iowa State University
    • Ames Laboratory/Iowa State University
    • Ames Laboratory and Dept. of Phys. and Astro.,, Iowa State Univ.
    • Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames, IA 50010, USA
    • Ames Lab & Dept of Physics and Astronomy, Iowa State University
    • Physics, Iowa State University/Ames Laboratory
    • Iowa State University and Ames Laboratory

  • Paul Canfield

    • Ames Laboratory and Dept. of Physics, Iowa State University
    • Ames Laboratory, U.S. DOE, Iowa State University, Ames, Iowa 50011, USA.
    • Ames Laboratory
    • Iowa State University
    • Department of Physics, Iowa State University, Ames Laboratory, Ames, Iowa 50011, USA
    • Ames Laboratory, Iowa State University
    • Ames Laboratory/Iowa State University
    • Iowa State University and Ames Laboratory
    • Ames Laboratory and Iowa State University, Ames, IA, USA
    • Ames Laboratory and Dept. of Phys. and Astro.,, Iowa State Univ.
    • Ames Laboratory and Department of Physics & Astronomy, Iowa State University, Ames, IA 50010, USA
    • Ames Lab & Dept of Physics and Astronomy, Iowa State University
    • Department of Physics & Astronomy, Iowa State University
    • Department of physics and astronomy, Iowa State University/Ames Laboratory
    • Physics, Iowa State University/Ames Laboratory
    • Ames Laboratory & Iowa State University
    • Physics, Iowa State University