Figure 4From: Ab initio calculation of valley splitting in monolayer δ-doped phosphorus in siliconBand structure (colour online) of the 40-layer tetragonal system zoomed in on the δ band. (a) PW (vasp), (b) DZP (siesta) and (c) SZP basis sets were used. Fermi level is shown by a solid horizontal red line.Back to article page