Eur. Phys. J. B 83, 487-492 (2011)
https://doi.org/10.1140/epjb/e2011-20313-9

Regular Article

Electronic transport properties of junctions between carbon nanotubes and graphene nanoribbons

¹ College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, P.R. China
² School of Electronic Science & Engineering, Nanjing University of Post and Telecommunications, Nanjing 210046, P.R. China

^a e-mail: xhyan@nuaa.edu.cn

Received: 24 April 2011
Received in final form: 7 September 2011
Published online: 24 October 2011

Abstract

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.