Bichromatic moiré superlattices for tunable quadrupolar trions and correlated states
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 WSe<sub>2</sub>/WS<sub>2</sub>/WSe<sub>2</sub> 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 transition from interlayer to intralayer Mott states with enhanced Coulomb repulsion. The asymmetric stacking further enriches excitonic selection rules, broadening opportunities for spin-photon engineering. Our results demonstrate bichromatic moiré superlattices as a reconfigurable platform for emergent quantum states, where quadrupolar moiré trion emission may enable coherent and entangled quantum light manipulation.
Authors
- Jiaqiang Yan (ORCID: https://orcid.org/0000-0001-6625-4706)
- You Lai (ORCID: https://orcid.org/0000-0003-0478-8547)
- Erik Henriksen (ORCID: https://orcid.org/0000-0002-4978-2440)
- Ryan Li (ORCID: https://orcid.org/0000-0001-9750-9361)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0002-1467-3105)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Chaowei Hu (ORCID: https://orcid.org/0000-0003-2071-0109)
- Jiun‐Haw Chu (ORCID: https://orcid.org/0000-0001-6222-1210)
- Li Yang (ORCID: https://orcid.org/0000-0002-8611-6359)
- Haonan Wang (ORCID: https://orcid.org/0000-0002-3150-6616)
- Xi Wang (ORCID: https://orcid.org/0000-0002-0641-0882)
- Chuanwei Zhang (ORCID: https://orcid.org/0000-0002-0344-6847)
- Mingfeng Chen (ORCID: https://orcid.org/0000-0001-8408-0359)
- Yuliang Yang (ORCID: https://orcid.org/0009-0005-6460-8976)
Institutions
- Oak Ridge National Laboratory (US)
- University of Washington (US)
- Washington University in St. Louis (US)
- National Institute for Materials Science (JP)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-11-24
- DOI
- https://doi.org/10.1038/s41467-025-65342-6
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- U.S. Department of Energy
- Gordon and Betty Moore Foundation
- Purdue University
- Washington University in St. Louis
- Ministry of Education, Culture, Sports, Science and Technology
- Office of Science
- Institute of Materials Science and Engineering, Washington University in St. Louis
- Japan Society for the Promotion of Science
- Division of Materials Research
- Office of Advanced Cyberinfrastructure
- Division of Electrical, Communications and Cyber Systems
- Basic Energy Sciences