Laterally Extended States of Interlayer Excitons in Reconstructed MoSe/WSe Heterostructures
arXiv:2411.19616 · doi:10.1038/s41535-025-00820-0
Abstract
Heterostructures made from 2D transition-metal dichalcogenides are known as ideal platforms to explore excitonic phenomena ranging from correlated moiré excitons to degenerate interlayer exciton ensembles. So far, it is assumed that the atomic reconstruction appearing in some of the heterostructures gives rise to a dominating localization of the exciton states. We demonstrate that excitonic states in reconstructed MoSe/WSe heterostructures can extend well beyond the moiré periodicity of the investigated heterostructures. The results are based on real-space calculations yielding a lateral potential map for interlayer excitons within the strain-relaxed heterostructures and corresponding real-space excitonic wavefunctions. We combine the theoretical results with cryogenic photoluminescence experiments, which support the computed level structure and relaxation characteristics of the interlayer excitons.
References in corpus (37)
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- 2D materials and van der Waals heterostructures
- Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
- Ultrafast Charge Transfer in Atomically Thin MoS2/WS2 Heterostructures
- Excitons in atomically thin transition metal dichalcogenides
- Observation of Long-Lived Interlayer Excitons in Monolayer MoSe2-WSe2 Heterostructures
- Moiré Excitons in Van der Waals Heterostructures
- Signatures of moiré-trapped valley excitons in MoSe/WSe heterobilayers
- Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
- k.p theory for two-dimensional transition metal dichalcogenide semiconductors
- Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
- High-temperature superfluidity with indirect excitons in van der Waals heterostructures
- Intrinsic Transport Properties of Electrons and Holes in Monolayer Transition Metal Dichalcogenides
- Atomic reconstruction in twisted bilayers of transition metal dichalcogenides
- Electrical control of interlayer exciton dynamics in atomically thin heterostructures
- Long-lived direct and indirect interlayer excitons in van der Waals heterostructures
- Theory of optical absorption by interlayer excitons in transition metal dichalcogenide heterobilayers
- Atomic reconstruction and moiré patterns in transition metal dichalcogenide van der Waals heterostructures
- Ab-Initio Theory of Moiré Superlattice Bands in Layered Two-Dimensional Materials
- Stacking domains and dislocation networks in marginally twisted bilayers of transition metal dichalcogenides
- Shubnikov-de Haas oscillations of high mobility holes in monolayer and bilayer WSe: Landau level degeneracy, effective mass, and negative compressibility
- Exciton-phonon coupling in MoSe2 monolayers
- Localization landscape theory of disorder in semiconductors II: Urbach tails of disordered quantum well layers
- Excitonic transport driven by repulsive dipolar interaction in a van der Waals heterostructure
- Diffusion quantum Monte Carlo study of excitonic complexes in two-dimensional transition-metal dichalcogenides
- Excitons in mesoscopically reconstructed moiré heterostructures
- Impact of strain on the excitonic linewidth in transition metal dichalcogenides
- Condensation signatures of photogenerated interlayer excitons in a van der Waals heterostack
- Localization and interaction of interlayer excitons in MoSe/WSe heterobilayers
- Optical dipole orientation of interlayer excitons in MoSe-WSe heterostacks
- Theory of moiré localized excitons in transition-metal dichalcogenide heterobilayers
- Key role of the moire potential for the quasi-condensation of interlayer excitons in van der Waals heterostructures
- Extended spatial coherence of interlayer excitons in MoSe/WSe heterobilayers
- Transport and localization of indirect excitons in a van der Waals heterostructure
- Exciton-phonon-scattering: A competition between bosonic and fermionic nature of bound electron-hole pairs
- Accurate force-field methodology capturing atomic reconstructions in transition metal dichalcogenide moiré systems
- Theory of interlayer exciton dynamics in 2D TMDCs Heterolayers under the influence of strain reconstruction and disorder