Surface potential-adjusted surface states in 3D topological photonic crystals

Park, Haedong, Oh, Sang Soon ORCID: https://orcid.org/0000-0003-3093-7016 and Lee, Seungwoo 2024. Surface potential-adjusted surface states in 3D topological photonic crystals. Scientific Reports 14 (1) , 7173. 10.1038/s41598-024-56894-6

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Abstract

Surface potential in a topological matter could unprecedentedly localize the waves. However, this surface potential is yet to be exploited in topological photonic systems. Here, we demonstrate that photonic surface states can be induced and controlled by the surface potential in a dielectric double gyroid (DG) photonic crystal. The basis translation in a unit cell enables tuning of the surface potential, which in turn regulates the degree of wave localization. The gradual modulation of DG photonic crystals enables the generation of a pseudomagnetic field. Overall, this study shows the interplay between surface potential and pseudomagnetic field regarding the surface states. The physical consequences outlined herein not only widen the scope of surface states in 3D photonic crystals but also highlight the importance of surface treatments in a photonic system.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Additional Information:	License information from Publisher: LICENSE 1: URL: http://creativecommons.org/licenses/by/4.0/, Type: open-access
Publisher:	Nature Research
ISSN:	2045-2322
Date of First Compliant Deposit:	27 March 2024
Date of Acceptance:	12 March 2024
Last Modified:	27 Mar 2024 10:15
URI:	https://orca.cardiff.ac.uk/id/eprint/167573

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