[21a-224A-1~10] 3.12 Nanoscale optical science and near-field optics

[21a-224A-4] Enhanced Magnetochiral Effects by a Single Metamolecule at Microwave Frequencies

〇Satoshi Tomita¹, Hiroyuki Kurosawa², Kei Sawada³, Tetsuya Ueda⁴ (1.NAIST-GSST, 2.NICT, 3.RIKEN SPring-8, 4.Kyoto Inst. Tech.)

Keywords:metamaterial, chirality, synthetic gauge field

This presentation introduces and overviews electromagnetism in structured metamaterials which undergo simultaneous time-reversal and space-inversion symmetry breaking due to magnetism and chirality. Direct experimental observation of optical magnetochiral effects in a single metamolecule with magnetism and chirality is demonstrated at microwave frequencies. Numerical simulations based on a finite element method reproduce the experimental results well, and predict the emergence of giant magnetochiral effects, by combining resonances in the metamolecule. This work opens the door to the realization of a one-way mirror and synthetic gauge fields for electromagnetic waves.