Optical reflection properties for the interface associated with Chern insulator and chiral metamaterial

Publication date: Available online 30 August 2019Source: Physics Letters AAuthor(s): Ran Zeng, Fangfang Chen, Chi Wang, Mingyue Zhang, Haozhen Li, Qiliang Li, Jun Ou, Yaping Yang, Shiyao ZhuAbstractBased on the topological nature of Chern insulator and magnetoelectric coupling of chiral metamaterial, we investigate the electrodynamics for the interface associated with the two media. The Fresnel coefficients of the interface between Chern insulator and chiral metamaterial, as well as the corresponding polarization rotation angles, are derived. The reflection characteristics of the linearly polarized incident wave at the interface, such as complete polarization conversion and change of polarization state, are discussed. Under the combined influence of Chern insulator and chiral metamaterial, the partial polarization conversion may be enhanced to the complete polarization conversion, and the chiral metamaterial may compensate for the suppression effect of longitudinal conductivity of Chern insulator on the polarization conversion.

Source: Physics Letters A - September 1, 2019 Category: Physics Source Type: research