Skip to Main content Skip to Navigation
Journal articles

Locally polarized wave propagation through crystalline metamaterials

Simon Yves 1 Thomas Berthelot 2, 3 Geoffroy Lerosey 4 Fabrice Lemoult 1 
2 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 : Wave propagation control is of fundamental interest in many areas of physics. It can be achieved with wavelength-scaled photonic crystals, hence avoiding low-frequency applications. By contrast, metamaterials are structured on a deep-subwavelength scale, and therefore usually described through homogenization, neglecting the unit-cell structuration. Here, we show with microwaves that, by considering their inherent crystallinity, we can induce wave propagation carrying angular momenta within a subwavelength-scaled collection of wires. Then, inspired by the quantum valley Hall effect in condensed-matter physics, we exploit this bulk circular polarization to create modes propagating along particular interfaces. The latter also carry an edge angular momentum whose conservation during the propagation allows wave routing by design in specific directions. This experimental study not only evidences that crystalline metamaterials are a straightforward tabletop platform to emulate exciting solid-state physics phenomena at the macroscopic scale, but it also opens the door to crystalline polarized subwavelength waveguides.
Document type :
Journal articles
Complete list of metadata
Contributor : Serge Palacin Connect in order to contact the contributor
Submitted on : Friday, March 26, 2021 - 5:42:34 PM
Last modification on : Friday, September 30, 2022 - 3:59:14 AM

Links full text



Simon Yves, Thomas Berthelot, Geoffroy Lerosey, Fabrice Lemoult. Locally polarized wave propagation through crystalline metamaterials. Physical Review B, American Physical Society, 2020, 101 (3), pp.035127. ⟨10.1103/PhysRevB.101.035127⟩. ⟨cea-03182925⟩



Record views