Si-Jie Chang

Robust valley-polarized excitonic Mott states and doublons enabled by stacking-controlled moiré geometry

Atomically-thin moiré superlattices offer a platform for interacting bosons, where strong onsite repulsion $${U}_{{{\rm{xx}}}}$$ suppresses double occupancy and supports excitonic Mott states at unit filling. However, moiré confinement also enhances phonon- and disorder-assisted...