Opt Lett. 2018 Dec 1;43(23):5741-5744. doi: 10.1364/OL.43.005741.
In this Letter, we propose a nonreciprocal heterostructure which combines magnetism and chirality in a simple, easy-to-fabricate design and exhibits at least two orders of magnitude larger magnetochiral dichroism, compared to other proposed metamaterials. This effect stems from the simultaneous lack of time-reversal and space-inversion symmetries and is enhanced by collective slow-photon modes originating from the strong bending of the photonic bands at the Brillouin zone boundaries. We investigate the optical properties of this bianisotropic multilayer heterostructure, consisting of consecutive bilayers of chiral and magnetic materials, embedded in air, and discuss the associated photonic band structure and transmission/absorption spectra obtained by means of full electrodynamic calculations.
在这封信件中，我们提出了一种非互易的异质结构，它将磁性和手性结合在一个简单、易于制造的设计中，并表现出比其他提出的超材料至少两个数量级更大的磁手性二色性。这种效应源于同时缺乏时间反演和空间反演对称性，并且通过源自布里渊区边界处光子带强烈弯曲的集体慢光子模式得到增强。我们研究了由空气嵌入的连续的手性和磁性材料双层组成的双各向异性多层异质结构的光学性质，并通过全电磁计算讨论了相关的光子带结构和透射/吸收谱。
