Nonlocal effects in singular plasmonic metasurfaces

Abstract

A local model of the dielectric response of a metal predicts that singular surfaces, such as sharp-edged structures, have a continuous absorption spectrum and extreme concentration of energy at the singularity. Here we show that nonlocality drastically alters this picture: the spectrum is now discrete and energy concentration, though still substantial, is greatly reduced.

References in corpus (9)

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Cited by in corpus (5)

• Roadmap on Nonlocality in Photonic Materials and Metamaterials
• Impact of surface roughness in nanogap plasmonic systems
• Probing Graphene's Nonlocality with Singular Metasurfaces
• Nonlocal effects in plasmonic metasurfaces with almost touching surfaces
• Second-harmonic generation from singular metasurfaces