A First Principle Approach to Investigate Electrical doping-Dependent Conductance Changes in Adenine-Thymine Hetero-structure Chain using GaAs Nanotube

Abstract

In this paper, we investigate the electrical doping dependent conductivity changes in Adenine and Thymine bio-molecular chain using Density functional Theory and Non-Equilibrium Green’s Function based first principle approach. The bio-molecular chain has been passed through GaAs multi walled nanotube electrodes. It has been identified that increasing electrical doping concentration increase the conductivity through the heterostructure bio-molecular chain. It is also found that the quantum transmission through this bio-molecular chain is also electrical doping dependent. The calculated Current-Voltage characteristics strongly induced due to the doping concentration that is applied at the two ends of the multi walled GaAs nanotube. It has been identified that a small increment in electrical doping leads to change a huge amount of current transmission through the Adenine-Thymine heterogeneous chain.