Localized interlayer excitons in MoSe2-WSe2 heterostructures without a moiré potential
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Department of Physics, University of ArizonaDepartment of Physics, University of Arizona
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2022Metadata
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Nature ResearchCitation
Mahdikhanysarvejahany, F., Shanks, D. N., Klein, M., Wang, Q., Koehler, M. R., Mandrus, D. G., Taniguchi, T., Watanabe, K., Monti, O. L. A., LeRoy, B. J., & Schaibley, J. R. (2022). Localized interlayer excitons in MoSe2-WSe2 heterostructures without a moiré potential. Nature Communications, 13(1), 5354.Journal
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Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Interlayer excitons (IXs) in MoSe2-WSe2 heterobilayers have generated interest as highly tunable light emitters in transition metal dichalcogenide (TMD) heterostructures. Previous reports of spectrally narrow (<1 meV) photoluminescence (PL) emission lines at low temperature have been attributed to IXs localized by the moiré potential between the TMD layers. We show that spectrally narrow IX PL lines are present even when the moiré potential is suppressed by inserting a bilayer hexagonal boron nitride (hBN) spacer between the TMD layers. We compare the doping, electric field, magnetic field, and temperature dependence of IXs in a directly contacted MoSe2-WSe2 region to those in a region separated by bilayer hBN. The doping, electric field, and temperature dependence of the narrow IX lines are similar for both regions, but their excitonic g-factors have opposite signs, indicating that the origin of narrow IX PL is not the moiré potential. © 2022. The Author(s).Note
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2041-1723PubMed ID
36097165Version
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Except where otherwise noted, this item's license is described as Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.