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

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 the center-of-mass wavefunction of the excitonic states in reconstructed MoSe 2 /WSe 2 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 with weak random disorder, as expected for realistic samples, and the corresponding real-space center-of-mass excitonic wavefunctions. We combine the theoretical results with cryogenic photoluminescence experiments, which support the computed level structure and relaxation characteristics of the interlayer excitons.

Authors

Institutions

Publication Details

Journal
npj Quantum Materials
Published
2025-09-16
DOI
https://doi.org/10.1038/s41535-025-00820-0
Primary Topic
2D Materials and Applications
Type
article
Field-Weighted Citation Impact
0.00

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

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

Mirco Troue, Torsten Stiehm, Jonas Kiemle, Hendrik Lambers et al.
npj Quantum Materials
2D Materials and Applications
article

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

Mirco Troue, Torsten Stiehm, Jonas Kiemle, Hendrik Lambers, Takashi Taniguchi, Alexander W. Holleitner, Kenji Watanabe, Johannes Figueiredo, Marten Richter, Ursula Wurstbauer, Andreas Knorr
article en

Abstract

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 the center-of-mass wavefunction of the excitonic states in reconstructed MoSe 2 /WSe 2 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 with weak random disorder, as expected for realistic samples, and the corresponding real-space center-of-mass excitonic wavefunctions. We combine the theoretical results with cryogenic photoluminescence experiments, which support the computed level structure and relaxation characteristics of the interlayer excitons.

npj Quantum MaterialsVol. 10(1)
Schott (Germany) (DE), National Institute for Materials Science (JP), University of Münster (DE), Munich Center for Quantum Science and Technology (DE), Technische Universität Berlin (DE)
Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Munich Center for Quantum Science and Technology, Japan Society for the Promotion of Science, Core Research for Evolutional Science and Technology
Openalex Percentile: Top 81%
2D Materials and Applications
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.