Reference : Directional Plasmonic Excitation by Helical Nanotips
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/47267
Directional Plasmonic Excitation by Helical Nanotips
English
Singh, Leeju []
Maccaferri, Nicolò mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
Garoli, Denis []
Gorodetski, Yuri []
2021
Nanomaterials
MDPI AG
11
5
1333
Yes (verified by ORBilu)
International
2079-4991
Basel
Switzerland
[en] Plasmonics ; Nanotip ; Chiral ; Symmetry breaking ; Directional excitation
[en] The phenomenon of coupling between light and surface plasmon polaritons requires specific momentum matching conditions. In the case of a single scattering object on a metallic surface, such as a nanoparticle or a nanohole, the coupling between a broadband effect, i.e., scattering, and a discrete one, such as surface plasmon excitation, leads to Fano-like resonance lineshapes. The necessary phase matching requirements can be used to engineer the light–plasmon coupling and to achieve a directional plasmonic excitation. Here, we investigate this effect by using a chiral nanotip to excite surface plasmons with a strong spin-dependent azimuthal variation. This effect can be described by a Fano-like interference with a complex coupling factor that can be modified thanks to a symmetry breaking of the nanostructure.
http://hdl.handle.net/10993/47267
10.3390/nano11051333
https://www.mdpi.com/2079-4991/11/5/1333
FnR ; FNR13624497 > Nicolò Maccaferri > ULTRON > Ultrafast Coherent Hybridization Of Photons And Spins In Multi-functional Magnetoplasmonic Metamaterials > 01/01/2020 > 31/12/2022 > 2019

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