The nature of a superconductor is fundamentally determined by the symmetries broken in its order parameter. Here, we report an exceptionally exotic superconducting phase in rhombohedral hexalayer graphene that simultaneously breaks rotational, translational, and time-reversal symmetries. We show that superconductivity emerges from a quarter-metallic state and is accompanied by the onset of stripe charge order. This unique intertwinement is revealed by angle-resolved transport measurements, which demonstrate dissipationless current confined to a single principal axis-forming one-dimensional-like superconducting channels -- while the orthogonal direction remains resistive down to the lowest temperatures. The formation of stripe order is marked by a first-order melting transition, evidenced by pronounced thermal hysteresis upon warming and cooling. In addition, magnetic-field-induced switching between superconducting states -- reminiscent of behavior previously observed in rhombohedral tetra- and pentalayer graphene -- signals time-reversal symmetry breaking. Collectively, these observations reveal a previously unrecognized quantum phase: a chiral superconductor embedded within a stripe-ordered anomalous Hall state.
Morissette et al. (Mon,) studied this question.