Antiferromagnetism of hybrid metamaterials

TL;DR

This paper demonstrates that a hybrid metamaterial composed of silicon nanoparticles and split-ring resonators can support optically-induced antiferromagnetic modes, enabling manipulation of artificial antiferromagnetism at high frequencies.

Contribution

It introduces a novel hybrid metamaterial structure that exhibits optically-induced antiferromagnetic responses and supports spin wave propagation.

Findings

Supports antiferromagnetic modes with checker-board pattern

Enables high-frequency manipulation of artificial antiferromagnetism

Shows potential for low-loss high-frequency applications

Abstract

We analyze a metal-dielectric structure composed of a silicon nanoparticle coupled to a stack of split-ring resonators, and reveal the possibility of optically-induced antiferromagnetic response of such a hybrid meta-molecule with a staggered pattern of the induced magnetization. We show that a hybrid metamaterial created by a periodic lattice of the meta-molecules supports antiferromagnetic modes with a checker-board pattern and the propagation of spin waves, opening new ways for manipulating artificial antiferromagnetism at high frequencies with low-loss materials.