Electronic Properties of Ultrathin 2D and 1D Alloyed Nanostructures of Stanene

Electronic structure of two dimensional (2D) and one dimensional (1D) ultrathin alloyed nanostructures of stanene has been investigated within the framework of state-of-the-art density functional theory (DFT). Ultrathin stanene is Dirac semimetal with linear dispersion of bands at K-point, whereas similar to 0.2 eV energy gap get induced in alloyed stanene, thereby, offers wide variety of application at nanoscale. Furthermore, the mechanical strength of alloyed stanene increases from 1.6 GPa in pristine monolayer to 2.2 GPa in alloyed nanostructure. Various topologies of 1D nanostructures are found to metallic in nature with calculated ballistic conductance in the range 2G(0) to 4 G(0). Our theoretical predictions may be useful for experimentalist to fabricate devices based on ultrathin nanostructures of alloyed stanene.