Structural-configurated magnetic plasmon bands in connected ring chains

TL;DR

This paper theoretically investigates magnetic plasmon bands in connected split ring resonator chains, revealing how different connection configurations lead to distinct coupling behaviors, wide bandwidths, and a novel negative propagating wave in one-dimensional systems.

Contribution

It introduces a theoretical analysis of magnetic plasmon bands in connected SRR chains, highlighting the effects of connection configuration on coupling and wave propagation.

Findings

Two types of MP bands with positive and negative dispersion were identified.

Connected chains support wide bandwidth magnetic plasmon modes.

Anti-connected chain exhibits a novel negative propagating wave starting from zero frequency.

Abstract

Magnetic resonance coupling between connected split ring resonators (SRRs) and magnetic plasmon (MP) excitations in the connected SRR chains were theoretically studied. By changing the connection configuration, two different coupling behaviors were observed, and therefore two kinds of MP bands were formed in the connected ring chains, accordingly. These MPs were revealed with positive and negative dispersion for the homo- and anti-connected chain, respectively. Notably, these two MP modes both have wide bandwidth due to the conductive coupling. Moreover, the anti-connected chain is found supporting a novel negative propagating wave with a wide band starting from zero frequency, which is a fancy phenomenon in one-dimensional system.