Double-bowl state in photonic Dirac nodal line semimetal

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 ow...

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Main Authors: Hu, Mengying, Zhang, Ye, Jiang, Xi, Qiao, Tong, Wang, Qiang, Zhu, Shining, Xiao, Meng, Liu, Hui
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/153979
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1539792023-02-28T19:57:57Z Double-bowl state in photonic Dirac nodal line semimetal Hu, Mengying Zhang, Ye Jiang, Xi Qiao, Tong Wang, Qiang Zhu, Shining Xiao, Meng Liu, Hui School of Physical and Mathematical Sciences Science::Physics Nanophotonics and Plasmonics Optics and Photonics 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. Published version This work is supported by National Natural Science Foundation of China (Grant No. 11904264, 11690033), National Key Research and Development Program of China (No. 2017YFA0205700), and National Key R&D Program of China (2017YFA0303702). M.X. is supported by the startup funding of Wuhan University. 2022-01-24T04:56:32Z 2022-01-24T04:56:32Z 2021 Journal Article 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-. https://dx.doi.org/10.1038/s41377-021-00614-6 2095-5545 https://hdl.handle.net/10356/153979 10.1038/s41377-021-00614-6 34417438 2-s2.0-85113221471 1 10 170 en Light: Science & Applications © 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 http://creativecommons.org/licenses/by/4.0/. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Nanophotonics and Plasmonics
Optics and Photonics
spellingShingle Science::Physics
Nanophotonics and Plasmonics
Optics and Photonics
Hu, Mengying
Zhang, Ye
Jiang, Xi
Qiao, Tong
Wang, Qiang
Zhu, Shining
Xiao, Meng
Liu, Hui
Double-bowl state in photonic Dirac nodal line semimetal
description 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.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Hu, Mengying
Zhang, Ye
Jiang, Xi
Qiao, Tong
Wang, Qiang
Zhu, Shining
Xiao, Meng
Liu, Hui
format Article
author Hu, Mengying
Zhang, Ye
Jiang, Xi
Qiao, Tong
Wang, Qiang
Zhu, Shining
Xiao, Meng
Liu, Hui
author_sort Hu, Mengying
title Double-bowl state in photonic Dirac nodal line semimetal
title_short Double-bowl state in photonic Dirac nodal line semimetal
title_full Double-bowl state in photonic Dirac nodal line semimetal
title_fullStr Double-bowl state in photonic Dirac nodal line semimetal
title_full_unstemmed Double-bowl state in photonic Dirac nodal line semimetal
title_sort double-bowl state in photonic dirac nodal line semimetal
publishDate 2022
url https://hdl.handle.net/10356/153979
_version_ 1759854653933092864