Chiral superconductivity near a fractional Chern insulator

Can fully spin polarized electrons become superconducting under purely repulsive interactions? Recent moiré experiments in twisted homobilayer MoTe₂ and rhombohedral pentalayer graphene hint that they can and that the pairing is chiral with Majorana modes. We present a simple microscopic route. Using DMRG on a minimal spinless Chern band, we find a chiral f wave superconductor that appears as an intermediate phase between a fractional Chern insulator and a metal under repulsion. This might be the first numerical evidence of spin polarized superconductivity from purely repulsive interactions. A closely competing charge density wave with quantized Hall response naturally explains the nearby reentrant integer quantum Hall features in experiments. We suggest a unified parton picture that captures the fractional Chern insulator, the reentrant integer quantum Hall order, and the superconducting dome.