Journal
PHYSICAL REVIEW B
Volume 81, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.195406
Keywords
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Funding
- Spanish DGES [MAT2006-06242, MAT2006-03741, FIS2009-08744]
- Spanish CSIC [PI 200860I048]
- CONICYT/Programa Bicentenario de Ciencia y Tecnologia [ACT27]
- USM [110856]
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We investigate the electronic transport properties of a bilayer graphene flake contacted by two monolayer nanoribbons. Such a finite-size bilayer flake can be built by overlapping two semi-infinite ribbons or by depositing a monolayer flake onto an infinite nanoribbon. These two structures have a complementary behavior that we study and analyze by means of a tight-binding method and a continuum Dirac model. We have found that for certain energy ranges and geometries, the conductance of these systems oscillates markedly between zero and the maximum value of the conductance, allowing for the design of electromechanical switches. Our understanding of the electronic transmission through bilayer flakes may provide a way to measure the inter-layer hopping in bilayer graphene.
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