Electronic and Transport Properties of DNA-based Nanowires

We study theoretically the transport properties through the quasi-one-dimensional (Q1D) one-channel DNA model and two-dimensional (2D) four-channel DNA model. We use a tight-binding (TB) technique to investigate the transmission, current-voltage characteristics, the differential conductance, and localization length as a function of incoming electron energy and magnetic flux. We find that the behavior of the transmission coefficients varies depending on the parameters of the backbone onsite energy, hopping integral from bases to backbone, and hydrogen bonds. Further, the fluctuations in the twisting angle from the temperature effects and the Aharonov-Bohm (AB) magnetic flux effect cause suppression and oscillations in the transmission.