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

Haedong Park, Sang Soon Oh, Seungwoo Lee

    Research output: Contribution to journalArticlepeer-review

    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.

    Original languageEnglish
    Article number7173
    JournalScientific reports
    Volume14
    Issue number1
    DOIs
    Publication statusPublished - 2024 Dec

    Bibliographical note

    Publisher Copyright:
    © The Author(s) 2024.

    ASJC Scopus subject areas

    • General

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