[15p-PB06-1~23] 3.11 Nanoscale optical science and near-field optics (formerly 3.12)

[15p-PB06-17] Magnetochiral effects by a toroidal metamolecule with spontaneous magnetization

〇Hiroyuki Kurosawa¹, Keisuke Itoh², Tetsuya Ueda¹ (1.Kyoto Inst. Tech., 2.ITIM)

Keywords:metamaterials, magnetism, chirality

Magnetochiral (MCh) effects known as directional birefringence for unpolarized electromagnetic waves are induced in a system with magnetism and chirality. We have demonstrated giant MCh effects by a single metamolecule with spontaneous magnetization. However, the metamolecule has a large insertion loss. Reduction of the loss is preferable for the practical applications of the MCh effects.
In this presentation, we show that a toroidal metamolecule with spontaneous magnetization has giant MCh effects with low insertion loss and discuss the physics behind the MCh effects.