Figure 2From: Fine Splitting of Electron States in Silicon Nanocrystal with a Hydrogen-like Shallow DonorEnergies of the “isotropic” model (V a = 0 in Eq. 7) as functions of the dot radius. From top to bottom: E 3e —dots; E 2e —short dash; E 1e —long dash; E 0e —solid line. All the energies are counted from the X-point energyBack to article page