  This study delves into the intricate electronic and optical behaviors of
two-dimensional (2D) honeycomb materials, such as Stannen, arsenene,
antimonene, silicene, and bismuthene(bismuth molecule), through the lens of
first-principles calculations(AB Initio Calculations) based on the Kohn-Sham
equations. Focusing on the exchange-correlation potential approximations within
the Density Functional Theory (DFT) framework, we evaluate the potential of
these materials in digital information control and management. Special
attention is given to the nonlinear optical responses and electronic properties
under the influence of twisted bilayer configurations, external fields, and
varying twist angles. The findings offer novel insights into the design of
advanced digital devices, suggesting a transformative approach to information
technology through the utilization of 2D honeycomb materials.
