Edge-dependent transport properties in graphene.
basic_science · Level V
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- Record sourced from PubMed, PMID 23409962.
- Also identified by DOI 10.1021/nl3044844.
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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.