Figure 2From: Ab initio calculation of valley splitting in monolayer δ-doped phosphorus in siliconBall and stick model of a δ -doped Si:P layer viewed along the [110] direction. Thirty-two layers in the [001] direction are shown. Si atoms (small gray spheres), P atoms (large dark gray spheres), covalent bonds (gray sticks), repeating cell boundary (solid line).Back to article page