Figure 2
From: Computational insights into popsilicene as a new planar silicon allotrope composed of 5–8–5 rings

(a) Time evolution of the total energy per atom in the Pop-Si lattice at 1000K using the PBE approach. The insets show the top and side views of the final AIMD snapshot at 5 ps. (b) The phonon band structure of Pop-Si is calculated at the PBE level.