Effect of Lithium Dopant on Stanene Nanotube’s Properties

A two-probe system is created to compare pure and lithium-doped stanene nanotubes using non-equilibrium Green’s function and density functional theory. In order to better understand the numerous transport phenomena occurring in these devices, a number of electronic parameters, including band structure, the density of states, I–V curve, differential conductance, and transmission spectra, are examined at discrete bias voltage. Stanene nanotubes are shown to be direct band semiconductors, with band gaps narrowing as the number of dopants increased, indicating a boost in conductivity. When the bias voltage is greater than 0.6 V, negative differential resistance (NDR) is seen in the devices with 2 and 3 dopant atoms. NDR is brought on by the transmission coefficient’s variation with the bias voltage since the system’s transport characteristics are sensitive to the applied bias voltage. It can be concluded that a device with three dopant atoms has better conduction behaviour. These inferences offer thorough information about the use of stanene nanotubes in upcoming nano-scale applications.