Hyperbolic Weyl Point in Reciprocal Chiral Metamaterials

被引：148
|
作者：
Xiao, Meng [1 ,2 ]
Lin, Qian [3 ]
Fan, Shanhui [1 ,2 ]
机构：
[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[2] Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA
[3] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
来源：
PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 05期
关键词：
FERMI ARCS; DISCOVERY; SEMIMETAL; LATTICE;
D O I：
10.1103/PhysRevLett.117.057401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the existence of Weyl points in a class of noncentral symmetric metamaterials, which has time reversal symmetry, but does not have inversion symmetry due to chiral coupling between electric and magnetic fields. This class of metamaterial exhibits either type-I or type-II Weyl points depending on its nonlocal response. We also provide a physical realization of such metamaterial consisting of an array of metal wires in the shape of elliptical helices which exhibits type-II Weyl points.
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页数：5
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