Instabilities of Bogoliubov-de Gennes quasiparticles in the zeroth Landau level of nodal superconductors under strain

ORAL

Abstract

Landau levels have recently been predicted [1-2] to emerge in 2D nodal superconductors under applied strain or doping gradients. In contrast to more conventional cases, time-reversal symmetry is preserved in the absence of interactions. We study the interaction-driven instabilities of the Bogoliubov-de Gennes quasiparticles in the flat, zeroth Landau-level. We focus on ferromagnetic and valley-polarized states and show that the resulting phase diagram depends on the direction of the applied strain.

[1] Emilian M. Nica and Marcel Franz, Phys. Rev. B 97, 024520 (2018).
[2] G. Massarelli, G. Wachtel, J. Y. T. Wei, and A. Paramekanti, Phys. Rev. B 96, 224516 (2017).

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Presenters

  • Emilian Nica

    University of British Columbia, Department of Physics, Arizona State University, Department of Physics and Astronomy, University of British Columbia, Arizona State University

Authors

  • Emilian Nica

    University of British Columbia, Department of Physics, Arizona State University, Department of Physics and Astronomy, University of British Columbia, Arizona State University

  • Onur Erten

    Arizona State University, Rutgers University, New Brunswick, Department of Physics, Arizona State University