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Observation of a High-Energy Tamm Plasmon State in the Near-IR Region

[Image: see text] We report on the experimental observation of a Tamm plasmon state in the near-IR region characterized by an anomalously high energy level located in the upper half of the photonic band gap. Such a “blue” Tamm plasmon was demonstrated at the interface between a conventional, complet...

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Detalles Bibliográficos
Autores principales: Buchnev, Oleksandr, Belosludtsev, Alexandr, Fedotov, Vassili A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9096782/
https://www.ncbi.nlm.nih.gov/pubmed/35261229
http://dx.doi.org/10.1021/acsami.2c00486
Descripción
Sumario:[Image: see text] We report on the experimental observation of a Tamm plasmon state in the near-IR region characterized by an anomalously high energy level located in the upper half of the photonic band gap. Such a “blue” Tamm plasmon was demonstrated at the interface between a conventional, completely periodic Bragg reflector and a nanostructured nonresonant thin gold grating. We study the effect of the grating period on the characteristics of the anomalous state and show that the anomaly results from a nontrivial topology of the nanograting’s optical near field, which cannot be captured by the effective medium approach and transfer matrix method commonly employed in the analysis of Tamm plasmons.