Realization of Su-Schrieffer-Heeger states based on metamaterials of magnetic solitons

Gyungchoon Go, Ik Sun Hong, Seo Won Lee, Se Kwon Kim, Kyung Jin Lee

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)

    Abstract

    We theoretically investigate coupled gyration modes of magnetic solitons whose distances to the nearest neighbors are staggered. In a one-dimensional bipartite lattice, we analytically and numerically find that there is a midgap gyration mode bounded at the domain wall connecting topologically distinct two phases which is analogous to the Su-Schrieffer-Heeger model. As a technological application, we show that a one-dimensional domain-wall string in a two-dimensional soliton lattice can serve as a waveguide of magnetic excitations, which offers functionalities of a signal localization and selective propagation of the frequency modes. Our result offers an alternative way to control the magnetic excitation modes by using a magnetic metamaterial for future spintronic devices.

    Original languageEnglish
    Article number134423
    JournalPhysical Review B
    Volume101
    Issue number13
    DOIs
    Publication statusPublished - 2020 Apr 1

    Bibliographical note

    Funding Information:
    G.G. was supported by the National Research Foundation of Korea (NRF) (Grant No. NRF-2019R1I1A1A01063594). S.K.K. was supported by a Young Investigator Grant (YIG) from Korean-American Scientists and Engineers Association (KSEA) and Research Council Grant No. URC-19-090 of the University of Missouri. K.-J.L. acknowledges support by the NRF (Grant No. NRF-2020R1A2C3013302).

    Publisher Copyright:
    © 2020 American Physical Society.

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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