Chiral superconductivity and quantized anomalous Hall effects in rhombohedral graphene

Exotic quantum phenomena can emerge from the interplay of strong electron correlations and nontrivial electron topology, such as fractional quantum Hall effects and topological superconductivity. Rhombohedral multilayer graphene, with its gate-tunable flat bands and Berry curvature, provides a pristine crystalline platform for exploring these emergent phenomena. Here, I present our recent discovery of chiral superconductivity in rhombohedral tetra- and penta-layer graphene. In the normal state, we observe an anomalous Hall effect and magnetic hysteresis that persists below the superconducting transition temperature, indicating time-reversal symmetry breaking at the orbital level. Additionally, I will discuss the quantized anomalous Hall effects observed in this system.