Anisotropic energy gap in single crystals of isotropic superconductor SrPt<sub>3</sub>P

ORAL

Abstract

Antiperovskie pnictide SrPt3P shows the highest superconducting transition temperature, Tc, among the 5d element - based compounds, possibly with somewhat strong coupling, 2△0 /Tc ∼5. While the material itself is quite isotropic, its energy gap structure and pairing state remain uncertain due to the lack of single crystals. Here we report directional measurements of electrical resistivity and London penetration depth in single crystals SrPt3P. Surprisingly, our results show highly anisotropic nature of the superconducting energy gap.

*This work was supported by the US DOE, Office of Science, BES Materials Science and Engineering Division under contract # DE-AC02-07CH11358.

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Presenters

  • Kyuil Cho

    • Ames laboratory, Ames, IA
    • Ames Laboratory
    • Ames Laboratory and Iowa state University, Ames, USA

Authors

  • Kyuil Cho

    • Ames laboratory, Ames, IA
    • Ames Laboratory
    • Ames Laboratory and Iowa state University, Ames, USA

  • Serafim Teknowijoyo

    • Chapman Univ
    • Ames Laboratory and Iowa state University, Ames, USA

  • Elizabeth Krenkel

    • Ames Laboratory and Iowa state University, Ames, USA

  • Makariy A Tanatar

    • Ames Lab
    • Ames Laboratory
    • Ames Laboratory and Iowa state University, Ames, USA

  • Ruslan Prozorov

    • Ames Lab
    • Ames laboratory, Ames, IA
    • Ames Laboratory
    • Ames Laboratory and Iowa state University, Ames, USA
    • Iowa State University/Ames Laboratory

  • Nikolai D Zhigadlo

    • CrystMat Company, Zurich, Switzerland
    • University of Bern