Park, Haedong, Gao, Wenlong, Zhang, Xiao and Oh, Sang Soon ![]() ![]() |
Preview |
PDF
- Published Version
Available under License Creative Commons Attribution. Download (5MB) | Preview |
Abstract
Topological insulators constitute one of the most intriguing phenomena in modern condensed matter theory. The unique and exotic properties of topological states of matter allow for unidirectional gapless electron transport and extremely accurate measurements of the Hall conductivity. Recently, new topological effects occurring at Dirac/Weyl points have been better understood and demonstrated using artificial materials such as photonic and phononic crystals, metamaterials and electrical circuits. In comparison, the topological properties of nodal lines, which are one-dimensional degeneracies in momentum space, remain less explored. Here, we explain the theoretical concept of topological nodal lines and review recent and ongoing progress using artificial materials. The review includes recent demonstrations of non-Abelian topological charges of nodal lines in momentum space and examples of nodal lines realized in photonic and other systems. Finally, we will address the challenges involved in both experimental demonstration and theoretical understanding of topological nodal lines.
Item Type: | Article |
---|---|
Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QC Physics |
Additional Information: | This work is licensed under the Creative Commons Attribution 4.0 International License. |
Publisher: | De Gruyter |
ISSN: | 2192-8614 |
Funders: | European Regional Development Fund |
Date of First Compliant Deposit: | 4 February 2022 |
Date of Acceptance: | 17 January 2022 |
Last Modified: | 02 May 2023 11:53 |
URI: | https://orca.cardiff.ac.uk/id/eprint/147153 |
Citation Data
Cited 21 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
![]() |
Edit Item |