Figure 8
Three-dimensional holographic reconstruction of CuAu obtained after symmetrization (fourfold rotational symmetry and the mirror symmetry). Black dots are plotted at the positions where the reconstructed atomic image intensity is larger than 50% of the maximum intensity. Cubes have a side length of the actual lattice constant a = 3.75 Å. They are drawn in order to indicate the actual positions of atoms. The centre of the figure is the position of a fluorescing Cu atom. The images of the next-nearest neighbours of a fluorescing Cu atom peak at 3.4 Å from the centre. The nearest neighbours are weaker in intensity and not visible. |