Nature Communications · 2026
Abstract Exciton transport is fundamental for understanding transport phenomena in bosonic systems and for exploring excitation energy transfer in materials. Spatially indirect excitons (IXs) have long lifetimes allowing them to form quantum bosonic states and travel long distances. Van der Waals heterostructures form a new materials platform for exploring IX transport. Disordered in-plane potentials suppress IX transport due to IX localization and scattering. In this work, we found the efficient IX transport kinetics characterized by anomalously high IX mobility. The efficient IX transport kinetics is observed in the presence of substantial in-plane disorder. The anomalously high IX mobility, its disappearance with increasing temperature, and its non-monotonic dependence on density are qualitatively consistent with theoretical predictions of IX superfluidity.
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