Article Laterally extended states of interlayer excitons in reconstructed MoSe2/WSe2 heterostructures

Johannes Figueiredo ; Marten Richter ; Mirco Troue ; Jonas Kiemle ; Hendrik Lambers ; Torsten Stiehm ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Ursula Wurstbauer ; Andreas Knorr ; Alexander W. Holleitner

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Johannes Figueiredo, Marten Richter, Mirco Troue, Jonas Kiemle, Hendrik Lambers, Torsten Stiehm, Takashi Taniguchi, Kenji Watanabe, Ursula Wurstbauer, Andreas Knorr, Alexander W. Holleitner. Laterally extended states of interlayer excitons in reconstructed MoSe2/WSe2 heterostructures. npj Quantum Materials. 2025, 10 (1), 96. https://doi.org/10.1038/s41535-025-00820-0

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(abstract)

Heterostructures made from 2D transition-metal dichalcogenides are known as ideal platforms to explore excitonic phenomena ranging from correlated moiré exciton ensembles 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 MoSe2/WSe2 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.

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Keyword: interlayer excitons, reconstructed heterostructures
, MoSe2/WSe2

Date published: 2025-09-16

Publisher: Springer Science and Business Media LLC

Journal:

  • npj Quantum Materials (ISSN: 23974648) vol. 10 issue. 1 96

Funding:

  • Deutsche Forschungsgemeinschaft MCQST (EXS-2111)
  • Deutsche Forschungsgemeinschaft KN 427/11-2, 15-1
  • Deutsche Forschungsgemeinschaft MCQST (EXS-2111)
  • Deutsche Forschungsgemeinschaft MCQST (EXS-2111)
  • Deutsche Forschungsgemeinschaft WU 637 4-2, 7-1, 8-1
  • Deutsche Forschungsgemeinschaft WU 637 4-2, 7-1, 8-1
  • Deutsche Forschungsgemeinschaft WU 637 4-2, 7-1, 8-1
  • Deutsche Forschungsgemeinschaft KN 427/11-2, 15-1
  • Deutsche Forschungsgemeinschaft MCQST (EXS-2111)
  • JSPS KAKENHI 21H05233 and 23H02052
  • JSPS KAKENHI 21H05233 and 23H02052
  • CREST JPMJCR24A5
  • CREST JPMJCR24A5
  • JST and World Premier International Research Center Initiative WPI
  • JST and World Premier International Research Center Initiative WPI

Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1038/s41535-025-00820-0

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Updated at: 2026-03-10 12:30:17 +0900

Published on MDR: 2026-03-10 09:03:19 +0900

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