“…For all energy bands, our results are in excellent agreement with those of other calculations using pseudopotentials, and plane-wave basis set, and full frequency integration (no plasmon-pole models). 10,28,50 In the vicinity of the valence band maximum (VBM) our results are also consistent with those obtained with plasmon-pole models. 51,52 However, as one moves away from the VBM, significant differences are found, e.g., our computed valence-band width is 11.64 eV, while it is 11.90-11.95 eV when using plasmon-pole models.…”