Linked Weyl surfaces and Weyl arcs in photonic metamaterials

doi:10.1126/science.abi7803

GSTDTAP > 气候变化

DOI	10.1126/science.abi7803
	Linked Weyl surfaces and Weyl arcs in photonic metamaterials
	Shaojie Ma; Yangang Bi; Qinghua Guo; Biao Yang; Oubo You; Jing Feng; Hong-Bo Sun; Shuang Zhang
	2021-07-30
发表期刊	Science
出版年	2021
英文摘要	In condensed-matter systems, the band structure of a material has often been equated with functionality. However, consideration of the topology of the band structure now provides a route to developing a functionality that goes far beyond the expected properties of the materials. Using electromagnetic metamaterials as building blocks, Ma et al. realized a five-dimensional generalization of a topological Weyl semimetal. Along with the three real momentum dimensions, these included two bi-anisotropy material parameters as synthetic dimensions to demonstrate both linked Weyl surfaces and Yang monopoles. The metamaterial platform provides a powerful route to explore the exotic physics associated with higher-order topological phenomena. Science , abi7803, this issue p. [572][1] Generalization of the concept of band topology from lower-dimensional to higher-dimensional ( n > 3) physical systems is expected to introduce new bulk and boundary topological effects. However, theoretically predicted topological singularities in five-dimensional systems—Weyl surfaces and Yang monopoles—have either not been demonstrated in realistic physical systems or are limited to purely synthetic dimensions. We constructed a system possessing Yang monopoles and Weyl surfaces based on metamaterials with engineered electromagnetic properties, leading to the observation of several intriguing bulk and surface phenomena, such as linking of Weyl surfaces and surface Weyl arcs, via selected three-dimensional subspaces. The demonstrated photonic Weyl surfaces and Weyl arcs leverage the concept of higher-dimension topology to control the propagation of electromagnetic waves in artificially engineered photonic media. [1]: /lookup/doi/10.1126/science.abi7803
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/335543
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Shaojie Ma,Yangang Bi,Qinghua Guo,et al. Linked Weyl surfaces and Weyl arcs in photonic metamaterials[J]. Science,2021.
APA	Shaojie Ma.,Yangang Bi.,Qinghua Guo.,Biao Yang.,Oubo You.,...&Shuang Zhang.(2021).Linked Weyl surfaces and Weyl arcs in photonic metamaterials.Science.
MLA	Shaojie Ma,et al."Linked Weyl surfaces and Weyl arcs in photonic metamaterials".Science (2021).