Topological spoof plasmon polaritons based on C6-symmetric crystalline metasurfaces

R. Fleury; S. Yves; T. Berthelot; M. Fink; F. Lemoult; G. Lerosey

Topological spoof plasmon polaritons based on C6-symmetric crystalline metasurfaces

R. Fleury ¹ S. Yves ² T. Berthelot ³ M. Fink ² F. Lemoult ² G. Lerosey ²

1 EPFL - Ecole Polytechnique Fédérale de Lausanne

2 Institut Langevin ondes et images

3 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences

NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)

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.

Document type :

Conference papers

Domain :

Chemical Sciences / Material chemistry

Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01728756
Contributor : Serge Palacin <>
Submitted on : Monday, March 12, 2018 - 8:13:09 AM
Last modification on : Thursday, July 4, 2019 - 11:00:07 AM

Topological spoof plasmon polaritons based on C6-symmetric crystalline metasurfaces

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Topological spoof plasmon polaritons based on C6-symmetric crystalline metasurfaces

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