Perfect Reflection of Chiral Fermions in Gated Graphene Nanoribbons

Details Perfect Reflection of Chiral Fermions in Gated Graphene Nanoribbons Perfect Reflection of Chiral Fermions in Gated Graphene Nanoribbons

2009-01-22

arxiv.org/abs/0901.3407v1

Nano Letters 9, 1980--1083. (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 3 figures. Submitted to Nano Letters

Scientific paper

10.1021/nl900227e

We describe the results of a theoretical study of transport through gated metallic graphene nanoribbons using a non-equilibrium Green function method. Although analogies with quantum field theory predict perfect transmission of chiral fermions through gated regions in one dimension, we find \emph{perfect reflection} of chiral fermions in armchair ribbons for specific configurations of the gate. This effect should be measurable in narrow graphene constrictions gated by a charged carbon nanotube.

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