title: Electromagnetic surface modes in structured perfect-conductor surfaces.
abstract: Surface-bound modes in metamaterials forged by drilling periodic hole arrays in perfect-conductor surfaces are investigated by means of both analytical techniques and rigorous numerical solution of Maxwell's equations. It is shown that these metamaterials cannot be described in general by local, frequency-dependent permitivities and permeabilities for small periods compared to the wavelength, except in certain limiting cases that are discussed in detail. New related metamaterials are shown to exhibit exciting optical properties that are elucidated in the light of our simple analytical approach.
authors.affiliation: Centro Mixto CSIC-UPV/EHU and Donostia International Physics Center (DIPC), Apartado 1072, 20080 San Sebastian, Spain.
authors.forename: F J García
authors.initials: FJ
authors.lastname: de Abajo
authors.forename: J J
authors.initials: JJ
authors.lastname: Sáenz