Quantum transport through polycyclic hydrocarbon molecules

Quantum transport properties through single polycyclic hydrocarbon molecules sandwiched between two metallic electrodes are studied by the use of Green's function technique. Here we introduce parametric approach, based on the tight-binding model to investigate the electronic transport through such molecular bridge systems. The electronic transport properties are discussed in two aspects: (a) the molecule-to-electrodes coupling strength and (b) the quantum interference effect.