# name
Imaging of Antiferroelectric Dark Modes in an Inverted Plasmonic Lattice

# metadata.dc.description.abstract[].value
Plasmonic lattice nanostructures are of technological interest because of their capacity to manipulate light below the diffraction limit. Here, we present a detailed study of dark and bright modes in the visible and near-infrared energy regime of an inverted plasmonic honeycomb lattice by a combination of Au+ focused ion beam lithography with nanometric resolution, optical and electron spectroscopy, and finite-difference time-domain simulations. The lattice consists of slits carved in a gold thin film, exhibiting hotspots and a set of bright and dark modes. We proposed that some of the dark modes detected by electron energy-loss spectroscopy are caused by antiferroelectric arrangements of the slit polarizations with two times the size of the hexagonal unit cell. The plasmonic resonances take place within the 0.5−2 eV energy range, indicating that they could be suitable for a synergistic coupling with excitons in two-dimensional transition metal dichalcogenides materials or for designing nanoscale sensing platforms based on near-field enhancement over a metallic surface.

# metadata.dc.rights[].value
cc-by (c) Rodriguez Alvarez, Javier et al., 2023

# metadata.dc.source[].value
Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.subject.classification[].value
Espectroscòpia de pèrdua d'energia d'electrons

# metadata.dc.title[].value
Imaging of Antiferroelectric Dark Modes in an Inverted Plasmonic Lattice