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Peer-reviewedCC BY 4.0Nature Communications

Efficient transport kinetics of indirect excitons in van der Waals heterostructure

  • Zhiwen Zhou1
  • W. J. Brunner1
  • E. A. Szwed1
  • H. Henstridge1
  • L. H. Fowler-Gerace1
  • L. V. Butov1
  1. 1Department of Physics, University of California San Diego, La Jolla, CA USA
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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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Cite

BibTeXRIS
BibTeX
@article{zhou2026efficient,
  title = {{Efficient transport kinetics of indirect excitons in van der Waals heterostructure}},
  author = {Zhiwen Zhou and W. J. Brunner and E. A. Szwed and H. Henstridge and L. H. Fowler-Gerace and L. V. Butov},
  journal = {Nature Communications},
  year = {2026},
  month = sep,
  doi = {10.1038/s41467-026-77967-2},
  url = {https://doi.org/10.1038/s41467-026-77967-2},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Efficient transport kinetics of indirect excitons in van der Waals heterostructure
AU  - Zhiwen Zhou
AU  - W. J. Brunner
AU  - E. A. Szwed
AU  - H. Henstridge
AU  - L. H. Fowler-Gerace
AU  - L. V. Butov
PY  - 2026
DA  - 2026/09/26
JO  - Nature Communications
DO  - 10.1038/s41467-026-77967-2
UR  - https://doi.org/10.1038/s41467-026-77967-2
AB  - 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.
SN  - 2041-1723
ER  -