Numerical Simulation of Temperature Gradient Driven Spin Transport in DNA Chains

A combined analytical approach is proposed to investigate the spin-selectivity properties of DNA nanowires considering the spin degree of freedom in the extended PBH model. Flexibility, low cost, and adjustable conductance are the important factors to consider the spin transport properties of DNA chains. Our aim is a numerical simulation of temperature gradient driven spin transfer in DNA. DNA chain is in the contact of the hot and cold thermostats as heat sources. The spin current corresponding to spin-up and spin-down electrons in the presence of a temperature gradient along the DNA chain are calculated. We can show the flowing the pure spin current via the modulation of parameters. Creation of pure spin current is important in information theory. Therefore, DNA is a potential candidate in spintronics for information transfer