Plasmonic metamaterial enhanced axionic magnetoelectric effect

TL;DR

This paper introduces a novel mechanism using plasmonic metamaterials to significantly enhance axionic magnetoelectric effects, surpassing previous simple multilayer structures by two orders of magnitude.

Contribution

It proposes a new plasmonic metamaterial-based approach to amplify axionic magnetoelectric responses, which was not achieved with earlier multilayer or interference-based methods.

Findings

Plasmonic metamaterials can enhance axionic effects by 100 times.

Numerical simulations confirm the effectiveness of the proposed mechanism.

The approach opens new avenues for magnetoelectric device design.

Abstract

Axionic electrodynamics predicts many peculiar magnetoelectric-based properties. Hitherto, simple structures such as one-dimensional multilayers were employed to explore these axionic magnetoelectric responses, and Fabry-P\'{e}rot interference mechanism was frequently applied to augment these effects. In this Letter, we propose a new mechanism, metamaterial-enhanced axionic magnetoelectric response, by taking advantage of intense enhancement of localized electromagnetic fields associated with plasmonic resonances. Through numerical simulations, we show that plasmonic metamaterial can enhance axionic magnetoelectric effect by two orders of magnitude.