Modeling of inter-ribbon tunneling in graphene

Abstract

The tunneling current between two crossed graphene ribbons is described invoking the empirical pseudopotential approximation and the Bardeen transfer Hamiltonian method. Results indicate that the density of states is the most important factor determining the tunneling current between small (˜nm) ribbons. The quasi-one dimensional nature of graphene nanoribbons is shown to result in resonant tunneling.