Soliton fractional charge of disordered graphene nanoribbon

Y. H. Jeong, S. R. Eric Yang, M. C. Cha

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    We investigate the properties of the gap-edge states of half-filled interacting disordered zigzag graphene nanoribbons, and find that the midgap states can display a quantized fractional charge of 1/2. These gap-edge states can be represented by topological kinks with their site probability distribution divided between the left and right zigzag edges with different chiralities. In addition, there are numerous spin-split gap-edge states, similar to those in a Mott-Anderson insulator.

    Original languageEnglish
    Article number265601
    JournalJournal of Physics Condensed Matter
    Volume31
    Issue number26
    DOIs
    Publication statusPublished - 2019 Apr 23

    Bibliographical note

    Publisher Copyright:
    © 2019 IOP Publishing Ltd.

    Keywords

    • Edge antiferromagnetism
    • Fractional charge
    • Gap states
    • Graphene nanoribbon
    • Mott-anderson insulator
    • Soliton

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics

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