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 language | English |
|---|---|
| Pages (from-to) | 1126-1130 |
| Number of pages | 5 |
| Journal | Nano Letters |
| Volume | 13 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 13 2013 |
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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 journal › Article
}
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
C2 - 23409962
AN - SCOPUS:84874955883
VL - 13
SP - 1126
EP - 1130
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 3
ER -