Figure 4
Vacancy. (a) Superstructure with 3 × 3 × 3 unit cells after optimization. Perspective view, approximately along [010]. The vacancy is marked by x. (b) Superstructure with 5 × 5 × 5 unit cells, containing 4464 atoms, after optimization. View direction approximately [010]. (c) Starting structure with a molecule in the centre of the vacancy, before optimization. In (c) the layer with the vacancy is shown in dark colours, the other layers are light grey. |