Fig. 3: Calculated band structures of w-, 4 | 8-, and monolayer group-III nitrides at the HSE06 level.
From: Elimination of the internal electrostatic field in two-dimensional GaN-based semiconductors
The high symmetry k-points are G (0, 0, 0), X (0.5, 0, 0), K (0.5, 0.5, 0), Y (0, 0.5, 0), and Z (0, 0, 0.5) in the cuboid Brillouin zone. The VBM and CBM at the G points for the wurtzite and 4 | 8 band structures are marked by green solid and hollow circles, respectively. The arrows are the scheme of vertical excitation at the G and Q (between G and Y) points for the hexagonal configurations. The blue color represents the vertical excitation at the Q point.
