Research Article
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)
Figure 6
Phonon dispersion for (a) the compressed (−2% strain), (b) undisturbed (unstrained), and (c) stretched monolayer (+2% strained) of 2H-WTe2.
(a) |
(b) |
(c) |