Robust non-Abelian even-denominator fractional Chern insulator in twisted bilayer MoTe₂.

ABSTRACT: A recent experiment has observed a series of quantum-spin-Hall effects in moiré MoTe₂. Among them, the vanishing Hall signal at the filling factor ν  = 3 implies a possible realization of a time-reversal pair of even-denominator fractional Chern insulators. Inspired by this discovery, we numerically investigate whether a robust incompressible quantum-Hall liquid can be stabilized in the half-filled Chern band of twisted MoTe₂ bilayers. We use the continuum model with parameters relevant to twisted MoTe₂ bilayers and obtain three consecutive nearly flat Chern bands with the same Chern number. Crucially, when the second moiré miniband is half-filled, signatures of a non-Abelian fractional quantum-Hall state are found via exact diagonalization calculations, in

SUBMITTER: Chen F 

PROVIDER: S-EPMC11876646 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature