Eur. Phys. J. B 79, 163-167 (2011)
https://doi.org/10.1140/epjb/e2010-10493-1

Strong dynamic magnetoelectric coupling in metamaterial

¹ Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
² Experimentelle Physik IV, Universität Würzburg, 97074 Würzburg, Germany
³ Fachbereich 1, Universität Bremen, 28359 Bremen, Germany

Corresponding author: ^a andrei.pimenov@ifp.tuwien.ac.at

Received: 24 June 2010
Revised: 18 November 2010
Published online: 23 December 2010

Abstract

Magnetoelectric susceptibility (ξ) of classical magnetoelectrics is always substantially smaller that the geometric average of the electric (χ_e) and magnetic (χ_m) susceptibilities. Materials reaching the equality ξ² = χ_eχ_m as a limiting value may thus be considered as ideal magnetoelectrics. Here we investigate the magnetoelectric susceptibility of a metamaterial built from split ring resonators both experimentally and within an equivalent circuit model. Due to a direct proportionality between electric polarization and magnetization, the magnetoelectric susceptibility of this metamaterial fulfils the equality ξ² = χ_eχ_m at least in the dynamic regime.