Molecular wires: Tuning of electron transport

Electron transport characteristics through molecular wires are studied by using the Green’s function technique. Parametric calculations are performed based on the tight-binding model to investigate the transport properties through the wires. The transport characteristics are significantly influenced by (a) the interference effects, (b) the chemical substituent group, (c) the molecule-to-electrodes coupling strength and (d) the gate voltage, and, here we focus our results in these aspects. In this article, we also discuss the noise power of current fluctuations. The noise power gives key information about the electron correlation which is obtained by calculating the Fano factor ( F ) and the complete knowledge of these current fluctuations is very essential to fabricate efficient molecular devices.