Realization of a Photonic Higher‐Order Double‐Weyl Semimetal

IF 9.8 1区 物理与天体物理 Q1 OPTICS
Yingfeng Qi, Ziyao Wang, Yan Meng, Linyun Yang, Bei Yan, Zhen Gao
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Abstract

Higher‐order Weyl semimetal (HOWSM) with coexisting 2D topological surface states and 1D topological hinge states establishes the fundamental connection between the Weyl physics and higher‐order topology. However, existing experimental demonstrations of HOWSM have primarily focused on Weyl nodes with chiral charges of ±1. In this work, based on the space group symmetry, a photonic higher‐order double‐Weyl semimetal (HODWSM) with larger chiral charges is theoretically designed and experimentally realized in a 3D photonic metamaterial. It is demonstrated that this photonic HODWSM exhibits a single pair of quadratic double‐Weyl points with chiral charges of ±2 in the plane, supporting nontrivial higher‐order band topology in the remaining kz planes and achieving unprecedentedly long hinge Fermi arc traversing the entire Brillouin zone. This work extends the research scope of HOWSM and offers an ideal photonic platform for exploring higher‐order Weyl physics.

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来源期刊
CiteScore
14.20
自引率
5.50%
发文量
314
审稿时长
2 months
期刊介绍: Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications. As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics. The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.
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