Two band superconductivity in optimal doped Ca$_{10}$(Pt$_{3}$As$_{8})$(Fe$_{2}$As$_{2})_{5}$ superconductors revealed by anisotropic H$_{c2}$ measurement up to 65T

ORAL

Abstract

Anisotropic upper critical field, H$_{c2}$(T), has been determined using radio-frequency contactless penetration depth method in pulsed magnetic fields up to 65T for optimal Pt doped and La-doped Ca$_{10}$(Pt$_{3}$As$_{8})$(Fe$_{2}$As$_{2})_{5}$ single crystals with magnetic field applied parallel and perpendicular to \textit{ab} planes. For both compounds, with decreasing temperature, H$_{c2}^{//ab}$(T) shows a downward curvature while H$_{c2}^{\bot ab}$(T) shows an upward curvature, indicating their multiband superconductivity nature.

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Authors

  • Ni Ni

    UCLA Physics \& Astronomy, Los Alamos National Laboratory, University of California, Los Angeles, Los Alamos National laboratory, Los Alamos, NM, 87544, USA

  • Eundeok Mun

    NHMFL-LANL, Los Alamos National laboratory, Los Alamos, NM, 87544, USA

  • Shan Jiang

    Department of physics and Astronomy, University of California, Los Angeles, CA, 90095, USA

  • Vivien Zapf

    National High Magnetic Field Lab, Los Alamos National laboratory, Los Alamos, NM, 87544, USA, National High Magnetic Field Lab (NHMFL), Los Alamos National Lab (LANL)

  • Robert Cava

    Department of Chemistry, Princeton University, Department of Chemistry, Princeton university, Princeton NJ 08544 USA, Princeton University Chemistry Department, Institute for Quantum Matter, Princeton University, Department of Chemistry, Princeton University, NJ, 08544, USA, Princeton University

  • Eric D. Bauer

    Los Alamos Natl Lab, Los Alamos National Laboratory, Los Alamos National laboratory, Los Alamos, NM, 87544, USA

  • Filip Ronning

    Los Alamos Natl Lab, Los Alamos National Laboratory, Los Alamos National laboratory, Los Alamos, NM, 87544, USA