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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.10363 |
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| _version_ | 1866915266355527680 |
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| author | Morales, Nicolas Zorn Rühl, Daniel Steffen Sadofev, Sergey List-Kratochvil, Emil Blumstengel, Sylke |
| author_facet | Morales, Nicolas Zorn Rühl, Daniel Steffen Sadofev, Sergey List-Kratochvil, Emil Blumstengel, Sylke |
| contents | We present a tunable plasmonic platform that allows room temperature hybridization of dissimilar excitons, namely of Wannier-Mott excitons in monolayer (1L) WS2 and Frenkel excitons in molecular J-aggregates via simultaneous strong coupling to surface plasmon polaritons. It is based on a simple layered design consisting of a thin planar silver film and a dielectric spacer on which monolayer and the aggregates are assembled. Strong coupling is revealed by angle-dependent spectroscopic ellipsometry measurements in total internal reflection geometry by the observation of double Rabi splitting at the two excitonic resonances. We analyze the exciton-exciton-plasmon system with the coupled oscillator model and demonstrate modulation of polariton character and dynamics by the number of molecules participating in the coupling. Furthermore, we propose a route to remotely control the mode splitting at the Frenkel excitonic resonance via electrostatic gating of the 1L-WS2 and to switch the molecule-plasmon interaction between the weak and strong coupling regime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_10363 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Plasmon-Mediated Hybridization of Wannier-Mott and Frenkel Excitons in a Monolayer WS2 -- J-Aggregate Hybrid System Morales, Nicolas Zorn Rühl, Daniel Steffen Sadofev, Sergey List-Kratochvil, Emil Blumstengel, Sylke Materials Science We present a tunable plasmonic platform that allows room temperature hybridization of dissimilar excitons, namely of Wannier-Mott excitons in monolayer (1L) WS2 and Frenkel excitons in molecular J-aggregates via simultaneous strong coupling to surface plasmon polaritons. It is based on a simple layered design consisting of a thin planar silver film and a dielectric spacer on which monolayer and the aggregates are assembled. Strong coupling is revealed by angle-dependent spectroscopic ellipsometry measurements in total internal reflection geometry by the observation of double Rabi splitting at the two excitonic resonances. We analyze the exciton-exciton-plasmon system with the coupled oscillator model and demonstrate modulation of polariton character and dynamics by the number of molecules participating in the coupling. Furthermore, we propose a route to remotely control the mode splitting at the Frenkel excitonic resonance via electrostatic gating of the 1L-WS2 and to switch the molecule-plasmon interaction between the weak and strong coupling regime. |
| title | Plasmon-Mediated Hybridization of Wannier-Mott and Frenkel Excitons in a Monolayer WS2 -- J-Aggregate Hybrid System |
| topic | Materials Science |
| url | https://arxiv.org/abs/2503.10363 |