Electronic transport properties of junctions between carbon nanotubes and graphene nanoribbons

摘要

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 nanotubeanoribbonanotube, quasibound states are found, which cause antiresonance and result in conductance dips.