Topological spoof plasmon polaritons based on C6-symmetric crystalline metasurfaces

Abstract : We demonstrate topological surface polaritons that propagate on the surface of a two-dimensional (2D) metamaterial made of a subwavelength periodic arrangement of electromagnetic resonators. Such surface modes are obtained at the boundary between 2D domains of distinct topologies, characterized by non-zero spin-Chern invariants, where a spin degree of freedom is induced by relying on six-fold rotational (C6) crystal symmetry combined with time-reversal symmetry. Experiments are conducted in the microwave regime to corroborate the analytical and numerical predictions. Our proposal enables robust subwavelength guiding of electromagnetic waves on a surface along predefined paths.
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Contributor : Serge Palacin <>
Submitted on : Monday, March 12, 2018 - 8:13:09 AM
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R. Fleury, S. Yves, T. Berthelot, M. Fink, F. Lemoult, et al.. Topological spoof plasmon polaritons based on C6-symmetric crystalline metasurfaces. 2017 11th International Congress on Engineered Materials Platforms for Novel Wave Phenomena (Metamaterials), Aug 2017, Marseille, France. pp.109-111, ⟨10.1109/MetaMaterials.2017.8107856⟩. ⟨cea-01728756⟩



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