[14a-K303-1~9] 10.2 Fundamental and exploratory device technologies for spin

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[14a-K303-3] Giant nonreciprocal transparency by magnetochiral metamolecules

〇Kentaro Mita¹, Toshiyuki Kodama¹, Tetsuya Ueda², Toshihiro Nakanishi³, Kei Sawada⁴, Takahiro Chiba¹, Satoshi Tomita¹ (1.Tohoku Univ., 2.Kyoto Inst. of Tech., 3.Kyoto Univ., 4.RIKEN)

Keywords:

metamaterial,magnon polaritons,unidirectional transmission

A material's optical response is related to the symmetry of the system. In systems that break both time-reversal and spatial inversion symmetry, a polarization-independent birefringence known as the magneto-chiral effect occurs. In our previous microwave transmission measurements of magneto-chiral metamolecules composed of copper helices and ferrite rods, we observed ultrastrong coupling between magnons and photons. In this study, by optimizing the magneto-chiral metamolecules, we observed giant non-reciprocity in the unidirectional transmission of microwaves.