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Title: Double-bowl state in photonic Dirac nodal line semimetal
Authors: Hu, Mengying
Zhang, Ye
Jiang, Xi
Qiao, Tong
Wang, Qiang
Zhu, Shining
Xiao, Meng
Liu, Hui
Keywords: Science::Physics
Issue Date: 2021
Source: Hu, M., Zhang, Y., Jiang, X., Qiao, T., Wang, Q., Zhu, S., Xiao, M. & Liu, H. (2021). Double-bowl state in photonic Dirac nodal line semimetal. Light: Science & Applications, 10(1), 170-.
Journal: Light: Science & Applications
Abstract: The past decade has seen a proliferation of topological materials for both insulators and semimetals in electronic systems and classical waves. Topological semimetals exhibit topologically protected band degeneracies, such as nodal points and nodal lines. Dirac nodal line semimetals (DNLS), which own four-fold line degeneracy, have drawn particular attention. DNLSs have been studied in electronic systems but there is no photonic DNLS. Here in this work, we provide a new mechanism, which is unique for photonic systems to investigate a stringent photonic DNLS. When truncated, the photonic DNLS exhibits double-bowl states (DBS), which comprise two sets of perpendicularly polarized surface states. In sharp contrast to nondegenerate surface states in other photonic systems, here the two sets of surface states are almost degenerate over the whole-spectrum range. The DBS and the bulk Dirac nodal ring (DNR) dispersion along the relevant directions, are experimentally resolved.
ISSN: 2095-5545
DOI: 10.1038/s41377-021-00614-6
Rights: © 2021 The Author(s). Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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