Table 3. Energies (eV) of the Lowest Conduction Bands of Diamond at High-Symmetry Points of the BZ Referred to the Valence Band Maximum, and Minimum Energy Gap Eg, Obtained Using the PBE Exchange-Correlation Functional and Various Values of the Parameter a and Plane Wave Energy Cutoff Ecut.
| a | Ecut (kRy) | Γ | X | L | W | Eg |
|---|---|---|---|---|---|---|
| 2 | 6 | 5.600 | 4.770 | 8.467 | 10.626 | 4.138 |
| 3 | 6 | 5.600 | 4.775 | 8.468 | 10.627 | 4.142 |
| 4 | 6 | 5.600 | 4.778 | 8.468 | 10.627 | 4.145 |
| 2 | 10 | 5.600 | 4.770 | 8.468 | 10.626 | 4.138 |
| 3 | 10 | 5.600 | 4.775 | 8.468 | 10.627 | 4.142 |
| 4 | 10 | 5.600 | 4.775 | 8.468 | 10.627 | 4.143 |