Finding exotic superconducting pairing in topological semimetals

ORAL

Abstract

We explore the possibility of exotic superconducting pairing in topological semimetals. The topology and the associated symmetries of the semimetals result in a unique electronic band structure, which affects the superconducting gap structure and pair amplitude. In addition to the conventional spin-singlet even-frequency pairing it is possible to find odd-frequency spin-triplet pairing and also pairing with higher intrinsic angular momentum. We also investigate possible experimental probes which can distinguish the signatures of the exotic pairing.

*We acknowledge the financial support from the Knut and Alice Wallenberg Foundation through the Wallenberg Academy Fellows program, the Swedish Research Council (Vetenskapsr\aa det Grant No. 2018-03488), the European Research Council (ERC) under the European Unions Horizon 2020 Research and Innovation programme (ERC-2017-StG-757553), and the EU-COST Action CA-16218 Nanocohybri.

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Presenters

  • Paramita Dutta

    • Uppsala University
    • Department of Physics and Astronomy, Materials Theory, Uppsala University

Authors

  • Paramita Dutta

    • Uppsala University
    • Department of Physics and Astronomy, Materials Theory, Uppsala University

  • Fariborz Parhizgar

    • Department of Physics and Astronomy, Materials Theory, Uppsala University

  • Annica M Black-Schaffer

    • Uppsala University
    • Department of Physics and Astronomy, Materials Theory, Uppsala University
    • Department of Physics and Astronomy, Uppsala University