Fractional Chern insulators, and their time-reversal analogs, fractional topological insulators, are realizations of topological order in flat-band electronic systems; while the former have been realized experimentally in twisted bilayer MoTe2, the latter have remained more elusive. Here, using exact diagonalization calculations, the authors propose routes towards engineering fractional topological insulators in twisted bilayer MoTe2 and other moiré materials.
- Yves H. Kwan
- Glenn Wagner
- Nicolas Regnault