We develop an analytic circuit model for coupled plasmonic dimers separated by small gaps that provides a complete account of the optical resonance wavelength. Using a suitable equivalent circuit, it shows how partially conducting links can be treated and provides quantitative agreement with both experiment and full electromagnetic simulations. The model highlights how in the conducting regime, the kinetic inductance of the linkers set the spectral blue-shifts of the coupled plasmon.
Cite
@article{arxiv.1512.05521,
title = {Generalized circuit model for coupled plasmonic systems},
author = {Felix Benz and Bart de Nijs and Christos Tserkezis and Rohit Chikkaraddy and Daniel O. Sigle and Laurynas Pukenas and Stephen D. Evans and Javier Aizpurua and Jeremy J. Baumberg},
journal= {arXiv preprint arXiv:1512.05521},
year = {2015}
}