Multi-gap superconductivity in the ternary compound SrPt10P4 with complex new structure

ORAL

Abstract

We report superconductivity at 1.4 K in the new ternary compound SrPt10P4 with a complex new structure. The compound crystallizes in a monoclinic space-group C2/c (#15) with lattice parameters a= 22.9151(9)Å, b= 13.1664(5)Å, c=13.4131(5) Å, and β= 90.0270(5)°. Bulk superconductivity in the sample has been clearly demonstrated through resistivity, ac susceptibility, and heat capacity measurements. Detail specific heat analysis suggests rather weak electron-phonon coupling (ΔCel/ γnTc ~1.02) and multiple gap feature in this compound. High pressure measurements have shown that the superconducting Tc is systematically suppressed upon application of pressure, with a dTc/dP coefficient of -0.016 K/GPa.

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Presenters

  • Bing Lv

    University of Texas at Dallas, Department of Physics, University of Texas at Dallas, Univ of Texas, Dallas, Dept. of Physics, The University of Texas at Dallas, Department of Physcis, University of Texas at Dallas

Authors

  • Bing Lv

    University of Texas at Dallas, Department of Physics, University of Texas at Dallas, Univ of Texas, Dallas, Dept. of Physics, The University of Texas at Dallas, Department of Physcis, University of Texas at Dallas

  • Ben Jawdat

    Air Force Research Laboratory

  • Zheng Wu

    Department of Physics and Texas Center for Superconductivity, University of Houston, TcSUH and Dept. of Physics, University of Houston, Department of Physics and Texas Center for Superconductivity at University of Houston

  • Sheng Li

    Univ of Texas, Dallas, Dept. of Physics, The University of Texas at Dallas, Department of Physcis, University of Texas at Dallas

  • Paul C. W. Chu

    University of Houston, TcSUH and Dept. of Physics, University of Houston, Texas Center for Superconductivity at the University of Houston