ABSTRACT
Figure 11.1. Ideal surface nets found in low-index (hkl) planes of an fee Bravais lattice
The five possible 2D Bravais nets have been introduced in Chapter 2, and their point symmetry elements are shown in Figure 2.3. In a similar way to three-dimensional lattices, it is also convenient to define the Miller indices, Eq.(3.3), of a given orientation in the 2D lattice. A particular set of atomic rows in the surface net, all parallel to the line which intersects the unit mesh at as / h and bs I k , is labelled by convention as (hk). Figure 11.1 shows a square, a rectangular and a hexagonal net consistent with low-index (hkl) planes of the face-centred cubic lattice.
