Magic angles and correlations in twisted nodal superconductors

Abstract

Stacking 2D materials with a twist has proven to be a successful strategy to realize exotic phases of electrons. Here, the authors apply these ideas to intrinsic 2D nodal superconductors, showing a similar degree of control over neutral Dirac quasiparticles. Their velocity is quenched close to a ``magic'' angle, where interactions drive a time-reversal breaking phase transition. Gating and application of current and magnetic fields are shown to allow tuning their dispersion in future experiments and to open topological gaps.