Figure 5From: Ab initio calculation of valley splitting in monolayer δ-doped phosphorus in siliconMinimum band energies for tetragonal systems with 1/4 ML doping. (a) PW (vasp), (b) DZP (siesta) and (c) SZP (siesta) basis sets were used. Fermi level also shown where appropriate. Bold numbers indicate energy differences between band minima.Back to article page