Structural, Electronic, Dynamic, and Optical Properties of 2D Monolayer Tungsten Telluride (2H-WTe₂) under Small Biaxial Strain Using Density Functional Theory (DFT and DFT + U)

Table 1

The calculated effective Hubbard parameter for for 2% biaxial compression strain, unstrained, and 2% biaxial stress–strain.

Structure
	W(d) orbitals
2% Biaxial compression strain	3.036
Unstrained (equilibrium)	3.045
2% Biaxial stress–strain	3.053