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Role of interactions in the magneto-plasmonic response at the geometrical threshold of surface continuity

AuthorsPapaioannou, E. Th.; Fang, Hui; Caballero García, Blanca ; Akinoglu, E. M.; Giersig, Michael; García-Martín, Antonio ; Fumagalli, Paul
Issue Date18-Dec-2017
PublisherOptical Society of America
CitationOptics Express 25(26): 32792-32799 (2017)
AbstractThe optical and magneto-optical behavior in periodically nanostructured surfaces at the threshold of surface continuity is revealed. We address Co films that evolve from an island-like array to a connecting network of islands that form a membrane pattern. The analysis of magneto-optical spectra as well as numerical simulations show significant differences between continuous and broken membranes that depend dramatically on the energy of the incoming radiation. Light localization increases the magneto-optical signal in the membranes. However, the generation of hot spots is not accompanied with magneto-optic enhancement. The electromagnetic field profile within the membrane system can explain the differences in the transmission and in the magneto-optic Kerr signal.
Publisher version (URL)https://doi.org/10.1364/OE.25.032792
Appears in Collections:(IMN-CNM) Artículos
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