Edge-dependent transport properties in graphene

Hidenori Goto, Eri Uesugi, Ritsuko Eguchi, Akihiko Fujiwara, Yoshihiro Kubozono

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    Graphene has two kinds of edges which have different electronic properties. A singular electronic state emerges at zigzag edges, while it disappears at armchair edges. We study the edge-dependent transport properties in few-layer graphene by applying a side gate voltage to the edge with an ionic liquid. The devices indicating a conductance peak at the charge neutrality point have zigzag edges, confirmed by micro-Raman spectroscopy mapping. The hopping transport between zigzag edges increases the conductance.

    Original languageEnglish
    Pages (from-to)1126-1130
    Number of pages5
    JournalNano Letters
    Volume13
    Issue number3
    DOIs
    Publication statusPublished - Mar 13 2013

    Keywords

    • Graphene
    • Raman spectroscopy
    • edge
    • flat band
    • ionic liquid gate
    • transport property

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanical Engineering

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