Ideal photonic weyl nodes stabilized by screw rotation symmetry in space group 19
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Published version
Author(s)
Gao, Wenlong
Wang, Yao-Ting
Type
Journal Article
Abstract
Topological photonics have developed in recent years since the seminal discoveries of topological insulators in condensed matter physics for electrons. Among the numerous studies, photonic Weyl nodes have been studied very recently due to their intriguing surface Fermi arcs, Chiral zero modes and scattering properties. In this article, we propose a new design of an ideal photonic Weyl node metacrystal, meaning no excessive states are present at the Weyl nodes’ frequency. The Weyl node is stabilized by the screw rotation symmetry of space group 19. Group theory analysis is utilized to reveal how the Weyl nodes are spawned from line nodes in a higher symmetry metacrystal of space group 61. The minimum four Weyl nodes’ complex for time reversal invariant systems is found, which is a realistic photonic Weyl node metacrystal design compatible with standard printed circuit board techniques and is a complement to the few existing ideal photonic Weyl node designs and could be further utilized in studies of Weyl physics, for instance, Chiral zero modes and scatterings.
Date Issued
2020-07-12
Date Acceptance
2020-07-06
Citation
Crystals, 2020, 10 (7), pp.605-605
ISSN
2073-4352
Publisher
MDPI AG
Start Page
605
End Page
605
Journal / Book Title
Crystals
Volume
10
Issue
7
Copyright Statement
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Identifier
https://www.mdpi.com/2073-4352/10/7/605
Subjects
0306 Physical Chemistry (incl. Structural)
Publication Status
Published online
Date Publish Online
2020-07-12