Electron impact investigation of hybridization scheme in coupled split-ring resonators

Abstract

We present a numerical electron impact investigation of the hybridization scheme in coupled split-ring resonators (SRRs) within the context of electron energy-loss spectroscopy (EELS). We observe that the fundamental, second- and third-order plasmonic modes of the isolated SRR are split into antisymmetric and symmetric modes in coupled SRRs with a strong effect on the orientation of each individual element. In order to perform the numerical investigation, the discrete-dipole approximation (DDA) has been used.