A hallmark of unconventional superconductivity in strongly correlated materials is its coexistence and competition with a spectrum of electronic phases. Among the most intriguing examples is the coexistence between superconductivity and charge-density modulations, which gives rise to the putative pair-density-wave state observed in high-critical-temperature cuprate superconductors.

In this talk, we present new observations in rhombohedral multilayer graphene that reveal strong coupling between charge-crystalline and superconducting phases. Charge crystallization is identified through thermal hysteresis, re-entrant quantum Hall effects, and current-driven breakdown of the crystalline order. The superconducting phases exhibit signatures of a chiral order parameter and are systematically bounded by the stability of the charge crystal. Together, these results point to an unconventional pairing mechanism mediated by coupling between itinerant electrons and the charge crystal.