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Straintronics using the monolayer-Xene platform -- a comparative study by Sahoo, Swastik; Koshi, Namitha Anna; Lee, Seung-Cheol; Bhattacharjee, Satadeep; Muralidharan, Bhaskaran is a scholarly article available to read on EtoBox.

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Monolayer silicene is a front runner in the 2D-Xene family, which also comprises germanene, stanene, and phosphorene, to name a few, due to its compatibility with current silicon fabrication technology. Here, we investigate the utility of 2D-Xenes for straintronics using the ab-initio density functional theory coupled with quantum transport based on the Landauer formalism. With a rigorous band structure analysis, we show the effect of strain on the K-point, and calculate the directional piezoresistances for the buckled Xenes as per their critical strain limit. Further, we compare the relevant gauge factors, and their sinusoidal dependences on the transport angle akin to silicene and graphene. The strain-insensitive transport angles corresponding to the zero gauge factors are 81 degree and 34 degree for armchair and zigzag strains, respectively, for silicene and germanene. For stanene as the strain limit is extended to 10% and notable changes in the fundamental parameters, the critical angle for stanene along armchair and zigzag directions are 69 degree and 34 degree respectively. The small values of gauge factors are attributed to their stable Dirac cones and strain-independent val

Author

Sahoo, Swastik; Koshi, Namitha Anna; Lee, Seung-Cheol; Bhattacharjee, Satadeep; Muralidharan, Bhaskaran

Published

2023

Language

EN