Electron Transmission through Graphene Bilayer Flakes
L. Chicoa, J.W. Gonzálezb,c, H. Santos a, M. Pacheco b and L. Brey a
aDepartamento de Teoría y Simulación de Materiales, Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 Madrid, Spain
bDepartamento de Física, Universidad Técnica Federico Santa María, Casilla 110 V, Valparaíso, Chile
cInternational Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-310 Braga, Portugal
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We investigate the electronic transport properties of a bilayer graphene flake contacted by two monolayer nanoribbons. This finite-size bilayer flake can be built by overlapping two semi-infinite ribbons. We study and analyze the electronic behavior of this structure by means of a tight-binding method and a continuum Dirac model. We have found that the conductance oscillates markedly between zero and the maximum value of the conductance, allowing for the design of electromechanical switches.
DOI: 10.12693/APhysPolA.122.299
PACS numbers: 73.22.-f, 73.63.-b