We show that interacting electrons in a flat Chern band can form, in addition to fractional Chern insulators, a chiral f-wave topological superconductor that hosts neutral Majorana fermion edge modes. Superconductivity emerges from an interaction-induced metallic state that exhibits anomalous Hall effect, as observed in rhombohedral graphene and near the ν=23 fractional Chern insulator in twisted transition metal dichalcogenides. locked icon locked icon locked icon locked icon locked icon locked icon locked icon locked icon locked icon locked icon Physics Subject Headings (PhySH)Flat bandsFractionalizationSuperconductivityTopological phases of matterTopological superconductorsExact diagonalization
Guerci et al. (2025) studied this question.