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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