|Title:||Plasmonic hybridization in the presence of topological insulators||Authors:||Chang, Railing
Leung, P. T.
|Issue Date:||1-Feb-2022||Publisher:||OPTICAL SOC AMER||Journal Volume:||39||Journal Issue:||2||Start page/Pages:||452-458||Source:||JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS||Abstract:||
The hybridization model for the coupled plasmons of a metallic nanoshell is generalized to the case with the presence of topological insulator materials via the application of axion electrodynamics. A new approach has to be adopted in the Lagrangian formulation of the coupling dynamics between the surface and cavity plasmons to account for the axion-induced charges on the boundary surfaces. It is found that, as observed previously from numerical studies in the literature, the hybridization model predicts that a topological magneto-electric effect will lead to red shifts on both the coupled bonding and anti-bonding modes-more significant for the higher-order bonding modes with the increase of the axion coupling parameter. (C) 2022 Optica Publishing Group
|Appears in Collections:||光電與材料科技學系|
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