Edge-dependent transport properties in graphene

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

Research output: Contribution to journalArticle

13 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

Fingerprint

Graphite
Transport properties
Graphene
graphene
transport properties
Ionic Liquids
Electronic states
Ionic liquids
Electronic properties
Raman spectroscopy
Electric potential
electronics
electric potential
liquids

Keywords

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

ASJC Scopus subject areas

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

Cite this

Edge-dependent transport properties in graphene. / Goto, Hidenori; Uesugi, Eri; Eguchi, Ritsuko; Fujiwara, Akihiko; Kubozono, Yoshihiro.

In: Nano Letters, Vol. 13, No. 3, 13.03.2013, p. 1126-1130.

Research output: Contribution to journalArticle

Goto, Hidenori ; Uesugi, Eri ; Eguchi, Ritsuko ; Fujiwara, Akihiko ; Kubozono, Yoshihiro. / Edge-dependent transport properties in graphene. In: Nano Letters. 2013 ; Vol. 13, No. 3. pp. 1126-1130.
@article{49d62bd1c4cd4303a8c5e3d39279e51b,
title = "Edge-dependent transport properties in graphene",
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.",
keywords = "edge, flat band, Graphene, ionic liquid gate, Raman spectroscopy, transport property",
author = "Hidenori Goto and Eri Uesugi and Ritsuko Eguchi and Akihiko Fujiwara and Yoshihiro Kubozono",
year = "2013",
month = "3",
day = "13",
doi = "10.1021/nl3044844",
language = "English",
volume = "13",
pages = "1126--1130",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "3",

}

TY - JOUR

T1 - Edge-dependent transport properties in graphene

AU - Goto, Hidenori

AU - Uesugi, Eri

AU - Eguchi, Ritsuko

AU - Fujiwara, Akihiko

AU - Kubozono, Yoshihiro

PY - 2013/3/13

Y1 - 2013/3/13

N2 - 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.

AB - 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.

KW - edge

KW - flat band

KW - Graphene

KW - ionic liquid gate

KW - Raman spectroscopy

KW - transport property

UR - http://www.scopus.com/inward/record.url?scp=84874955883&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874955883&partnerID=8YFLogxK

U2 - 10.1021/nl3044844

DO - 10.1021/nl3044844

M3 - Article

VL - 13

SP - 1126

EP - 1130

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 3

ER -