Exploring the superconducting state of a Dirac material

ORAL

Abstract

Superconductivity in a doped magnetic Weyl semimetal is predicted to be characterized by a topologically non-trivial nodal gap function. Realizing superconductivity in a centrosymmetric, non-magnetic Dirac material is a natural starting point in pursuit of such topological superconductivity. Previous theoretical and experimental work has demonstrated the existence of Dirac fermions in LaCuSb2. Here, we report on the properties of the superconducting state of LaCuSb2, including its sensitivity to magnetic fields and stoichiometry. The bulk superconducting phase transition is confirmed with specific heat, and the possible models of the gap function are discussed.

*This work was supported as part of the Institute for Quantum Matter, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0019331

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Presenters

  • Chris J Lygouras

    • Johns Hopkins University
    • John Hopkins University

Authors

  • Chris J Lygouras

    • Johns Hopkins University
    • John Hopkins University

  • Juan Chamorro

    • Johns Hopkins University

  • Tanya Berry

    • Johns Hopkins University

  • Thomas J Halloran

    • Johns Hopkins University

  • Junyi Zhang

    • Johns Hopkins University

  • Kagetora Mikuri

    • Univ of Tokyo-Kashiwanoha

  • Jun Gouchi

    • Univ of Tokyo-Kashiwanoha

  • Yoshiya Uwatoko

    • Univ of Tokyo-Kashiwanoha

  • Satoru Nakatsuji

    • Univ of Tokyo-Kashiwanoha
    • Department of Physics, University of Tokyo
    • The University of Tokyo
    • University of Tokyo, Japan
    • Univ of Tokyo
    • Dept. of Phys. Univ. of Tokyo

  • Ken Livi

    • Johns Hopkins University

  • Maxime Siegler

    • Johns Hopkins University

  • Yi Li

    • Johns Hopkins University

  • Collin L Broholm

    • Johns Hopkins University
    • John Hopkins University

  • Tyrel M McQueen

    • Johns Hopkins University
    • Department of Chemistry, The Johns Hopkins University