A1 Journal article (refereed)
Weak and strong coupling properties of surface excitons (2024)
Dutta, A., & Toppari, J. J. (2024). Weak and strong coupling properties of surface excitons. Physical Review B, 109(16), Article 165117. https://doi.org/10.1103/PhysRevB.109.165117
JYU authors or editors
Publication details
All authors or editors: Dutta, Arpan; Toppari, J. Jussi
Journal or series: Physical Review B
ISSN: 2469-9950
eISSN: 2469-9969
Publication year: 2024
Publication date: 05/04/2024
Volume: 109
Issue number: 16
Article number: 165117
Publisher: American Physical Society (APS)
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/PhysRevB.109.165117
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/94631
Abstract
With high enough doping concentrations, organic dye–doped polymer materials exhibit a negative real part of the permittivity within an energy range just above their material absorption, incurring surface exciton (SE) modes at these energies. Here, we report on how such modes can be used to realize strong light-matter coupling with photoactive molecules. Our simulations reveal that SEs can facilitate strong coupling by sustaining the energy-splitting-induced transparency; however, the polaritons may not be visible in the absorption since they can easily be located outside of the narrow negative permittivity regime. Moreover, we show that the SE modes cannot couple strongly with the surface plasmons. Our findings shed light on the weak and strong coupling properties of SEs.
Keywords: polymers; nanostructures; optical properties; surface phenomena; quasiparticles
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Ministry reporting: Yes
VIRTA submission year: 2024
Preliminary JUFO rating: 2