Kleemann, M-E., Chikkaraddy, R., Alexeev, E.M. orcid.org/0000-0002-8149-6364 et al. (9 more authors) (2017) Strong-coupling of WSe2 in ultra-compact plasmonic nanocavities at room temperature. Nature Communications, 8 (1). 1296.
Abstract
Strong-coupling of monolayer metal dichalcogenide semiconductors with light offers encouraging prospects for realistic exciton devices at room temperature. However, the nature of this coupling depends extremely sensitively on the optical confinement and the orientation of electronic dipoles and fields. Here, we show how plasmon strong coupling can be achieved in compact robust easily-assembled gold nano-gap resonators at room temperature. We prove that strong coupling is impossible with monolayers due to the large exciton coherence size, but resolve clear anti-crossings for 8 layer devices with Rabi splittings exceeding 135 meV. We show that such structures improve on prospects for nonlinear exciton functionalities by at least 10^4, while retaining quantum efficiencies above 50%.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/M012727/1 EUROPEAN COMMISSION - HORIZON 2020 676108 EUROPEAN COMMISSION - HORIZON 2020 649953 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 May 2017 13:29 |
Last Modified: | 06 Nov 2018 14:54 |
Published Version: | https://doi.org/10.1038/s41467-017-01398-3 |
Status: | Published |
Publisher: | Nature Publishing Group |
Refereed: | Yes |
Identification Number: | 10.1038/s41467-017-01398-3 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:115769 |