Gap structure and phase diagram of twisted bilayer cuprates from a microscopic perspective (opens in new tab)

Author(s): Siddhant Panda, Andreas Kreisel, Laura Fanfarillo, and P. J. HirschfeldTwisted cuprate Josephson junctions have been proposed as candidate platforms for superconducting states that break time-reversal symmetry. However, experiments report conflicting signatures. Here, the authors show that this variability can arise from microscopic parameters: the systematic exploration of the phase diagram reveals that twist angle θ, filling, and interlayer tunneling strength stabilize distinct c...