Acta Optica Sinica (Online), Volume. 2, Issue 1, 0110001(2025)
Experimental Progress on Optical Weyl Metamaterials and Fermi Arcs (Invited)
Weyl points, as a key concept in topological photonics and condensed matter physics, have seen significant advancements in both theoretical and experimental research in recent years. As singularities of Berry curvature, the emergence of Weyl points is always associated with the construction of topologically nontrivial systems, thus attracting considerable attention. Moreover, the presence of open Fermi arc surface states at the interface provides new insights into the manipulation of electromagnetic fields. However, realizing Weyl points requires the breaking of time-reversal symmetry or space inversion symmetry, which makes naturally occurring Weyl semimetals rare. Due to their high degree of freedom and customizable band structure, metamaterials are well-suited for constructing systems with Weyl points. We focus on the experimental characterization of electromagnetic Weyl points, particularly summarizing common configurations of Weyl metamaterials that break space inversion symmetry. We also analyze commonly used experimental measurement methods for Weyl points and introduce the experimental manifestations of Fermi arcs as typical observable phenomena. Based on this, we explore the potential applications of electromagnetic Weyl metamaterials in multiple fields.
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Hanyu Wang, Mengjian Zhu, Chucai Guo, Zhihong Zhu, Biao Yang. Experimental Progress on Optical Weyl Metamaterials and Fermi Arcs (Invited)[J]. Acta Optica Sinica (Online), 2025, 2(1): 0110001
Category: Research Articles
Received: Oct. 8, 2024
Accepted: Nov. 28, 2024
Published Online: Feb. 11, 2025
The Author Email: Guo Chucai (gcc_1981@163.com), Zhu Zhihong (zzhwcx@163.com), Yang Biao (yangbiaocam@nudt.edu.cn)
CSTR:32394.14.AOSOL240455