Electron irradiation effects on superconductivity in PdTe<sub>2</sub>: An application of a generalized Anderson theorem

ORAL

Abstract

We present a general theoretical framework for analyzing irradiation studies in spin-orbit-coupled multiorbital systems, which is based on a generalized Anderson theorem for multiband superconductors. We apply this framework to interpret results from a theory-experiment collaboration about the impact of nonmagnetic disorder on the normal and superconducting properties of the type-II Dirac semimetal PdTe2. Experimental measurements of longitudinal and Hall resistivity, thermal conductivity and London penetration depth using the tunnel-diode resonator technique are performed for various irradiation doses. They yield that the superconducting transition temperature is suppressed at a rate about 16 times lower than described by the Abrikosov-Gor’kov law. This imposes quantitative constraints on the gap anisotropies for each of the possible pairing candidate states. We conclude that the most likely pairing candidate is an unconventional A+−1g state, since other candidates require additional assumptions about the orbital structure of the disorder potential to be consistent with our experimental results.

*The experimental research was performed at Ames Laboratory. Ames Laboratory is operated for the U.S. DOE by Iowa State University under Contract No. DE-AC02-07CH11358.

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Presenters

  • Peter Orth

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

Authors

  • Peter Orth

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

  • Erik I Timmons

    • Iowa State University
    • Department of Physics and Astronomy, Iowa State University
    • Ames Laboratory/Iowa State University
    • Ames Lab

  • Serafim Teknowijoyo

    • Iowa State University

  • Marcin Konczykowski

    • Ecole Polytechnique

  • Olivier Cavani

    • Ecole Polytechnique

  • Makariy Tanatar

    • Ames Laboratory
    • Ames Laboratory, Ames, IA
    • Ames Lab

  • Sunil Ghimire

    • Iowa State University
    • Ames Laboratory, Ames, IA
    • Ames Laboratory

  • Kyuil Cho

    • Ames Laboratory
    • Ames Laboratory, Ames, IA

  • Yongbin Lee

    • Ames Laboratory
    • Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, USA
    • Iowa State University

  • Liqin Ke

    • Ames Laboratory
    • Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, USA
    • Iowa State University
    • Ames Laboratory, U.S. Department of Energy

  • Na Hyun Jo

    • Ames Laboratory

  • Sergey Budko

    • Iowa State University/ Ames Laboratory
    • Ames Laboratory
    • Physics and Astronomy, Iowa State University/Ames Laboratory
    • Ames Laboratory/Iowa State University
    • Ames Lab/Iowa State
    • Ames Laboratory, Ames, IA
    • Iowa State University/AmesLab
    • Department of Physics & Astronomy, Iowa State University/Ames Laboratory

  • Paul C Canfield

    • Iowa State University/ Ames Laboratory
    • Ames Laboratory
    • Ames Laboratory, Iowa State University
    • Iowa State University
    • Ames Lab/Iowa State
    • Ames Laboratory, Ames, IA
    • Iowa State University/AmesLab
    • Department of Physics and Astronomy, Iowa State University/Ames Laboratory
    • Department of Physics & Astronomy, Iowa State University/Ames Laboratory
    • Ames Laboratory, U.S. Department of Energy, and Department of Physics and Astronomy, Iowa State University
    • Ames Laboratory/Iowa State University

  • Mathias Scheurer

    • Universitat Innsbruck
    • Harvard University
    • University of Innsbruck
    • Department of Physics, Harvard University, Cambridge, MA 02138, USA

  • Ruslan Prozorov

    • Iowa State University
    • Ames Laboratory, Ames, IA
    • Department of Physics and Astronomy, Iowa State University
    • Ames Laboratory
    • Ames Laboratory/Iowa State University
    • Ames Lab