Work

From Fractionalization to Chiral Topological Superconductivity in a Flat Chern Band

Year: 2025

Type: article

Abstract: 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=2/3 fractional Chern insulator in twisted transition metal dichalcogenides.

Source: Physical Review Letters

DOI: 10.1103/zm39-dstj

Authors: Daniele Guerci, Ahmed Abouelkomsan, Liang Fu

Institution: Massachusetts Institute of Technology

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Simons Foundation, Knut och Alice Wallenbergs Stiftelse, Air Force Office of Scientific Research

Awards: G5415440201, G793911857