title: Size dependence of band structures in a two-dimensional plasmonic crystal with a square lattice.
abstract: A scanning transmission electron microscope (STEM) -cathodoluminescence (CL) technique is used to investigate the size dependence of the band structures in two-dimensional plasmonic crystals with a square lattice (SQ-PlCs) composed of cylindrical pillars and holes. The experimentally determined and calculated dependences of the band edge energies of the three SPP modes at the Γ point on the diameter of the cylindrical structure agree well. The photon maps reveal the field strength distributions of the standing SPP waves of the three eigenmodes. Additionally, a mechanism is proposed to explain the dependence of the contrast on the detected light polarization.
authors.forename: Naoki
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Hikaru
authors.initials: H
authors.lastname: Saito
mesh_terms: D003460:Crystallization; D008027:Light; D010316:Particle Size; D017785:Photons; D013057:Spectrum Analysis