Parity effects in few-layer graphene.
basic_science · Level V
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- Record sourced from PubMed, PMID 24111556.
- Also identified by DOI 10.1021/nl402404z.
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Abstract
We study the electronic properties in few-layer graphenes (FLGs) classified by even/odd layer number n. FLGs with even n have only parabolic energy dispersions, whereas FLGs with odd n have a linear dispersion besides parabolic ones. This difference leads to a distinct density of states in FLGs, experimentally confirmed by the gate-voltage dependence of the electric double-layer capacitance. Thus, FLGs with odd n are unique materials that have relativistic carriers originating in linear energy dispersion.