Bichromatic moire superlattices for tunable quadrupolar trions and correlated states.

ABSTRACT: Moiré superlattices in transition metal dichalcogenide heterostructures provide a platform to engineer many-body interactions. Here, we realize a bichromatic moiré superlattice in an asymmetric WSe₂/WS₂/WSe₂ heterotrilayer by combining R- and H-stacked bilayers with mismatched moiré wavelengths. This structure hosts fermionic quadrupolar moiré trions-interlayer excitons bound to an opposite-layer hole-with vanishing dipole moments. These trions arise from hybridized moiré potentials enabling multiple excitonic orbitals with tunable interlayer coupling, allowing control of excitonic and electronic ground states. We show that an out-of-plane electric field could effectively reshape moiré excitons and interlayer-intralayer electron correlations, driving a tran

SUBMITTER: Chen M 

PROVIDER: S-EPMC12645021 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature