First-principles study of the electronic transport properties of a C 131 -based molecular junction

Abstract

Using first-principles density functional theory and the non-equilibrium Green’s function formalism, we have studied the electronic transport properties of the dumbbell-like fullerene dimer C 131-based molecular junction. Our results show that the current–voltage curve displays an obvious negative differential resistance phenomenon in a certain bias voltage range. The negative differential resistance behavior can be understood in terms of the evolution of the transmission spectrum and the projected density of states with applied bias voltage. The present findings could be helpful for the application of the C 131 molecule in the field of single molecular devices or nanometer electronics.