Electronic transport properties of junctions between carbon nanotubes and graphene nanoribbons
College of Science, Nanjing University of Aeronautics and
2 School of Electronic Science & Engineering, Nanjing University of Post and Telecommunications, Nanjing 210046, P.R. China
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Received in final form: 7 September 2011
Published online: 24 October 2011
Using the tight-binding model and Green’s function method, we studied the electronic transport of four kinds of nanotube-graphene junctions. The results show the transport properties depend on both types of the carbon nanotube and graphene nanoribbon, metal or semiconducting. Moreover, the defect at the nanotube-graphene interface did not affect the conductance of the whole system at the Fermi level. In the double junction of nanotube/nanoribbon/nanotube, quasibound states are found, which cause antiresonance and result in conductance dips.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2011