Pseudospin-triplet superconductivity in CeRh2As2

ORAL

Abstract

Recent measurements suggest that CeRh2As2 has field induced odd-parity superconductivity [1]. Here, after an overview of recent experimental developments, I will discuss how the underlying crystal structure links closely to superconductivity in this material. Specifically, we argue that the local inversion symmetry breaking of Ce atomic sites lead to a pseudospin Kramer’s band degeneracy that behaves differently from more usual spin ½ degeneracies. The consequences of this on odd-parity superconductivity in CeRh2As2 will be highlighted [2].

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Publication: [1] S. Khim, J.F. Landaeta, J. Banda, N. Bannor, M. Brando, P.M.R. Brydon, D. Hafner, R. Kuchler, R. Cardoso-Gil, U. Stockert, A.P. Mackenzie, D.F. Agterberg, C. Geibel, and E. Hassinger, Science 373, 1012 (2021).
[2] D. C. Cavanagh, T. Shishidou, M. Weinert, P. M. R. Brydon, D. F. Agterberg, arXiv:2106.02698 (2021).

Presenters

  • Daniel F Agterberg

    University of Wisconsin - Milwaukee

Authors

  • Daniel F Agterberg

    University of Wisconsin - Milwaukee

  • David C Cavanagh

    Univ of Otago, University of Otago

  • Philip Brydon

    Univ of Otago

  • TATSUYA SHISHIDOU

    University of Wisconsin - Milwaukee

  • Michael Weinert

    University of Wisconsin - Milwaukee, Department of Physics, University of Wisconsin, Milwaukee, Wisconsin 53211, United States