ABSTRACT
FIGURE 6.3 Overlayer unit cells and proposed structure models for CO molecules adsorbed on a Pd (111) surface at various coverages. Dark circles denote the proposed positions of the CO molecules. (a) e = 0.33 (/3 x /3) R 30° structure; (b) e = 0.5 (c 4 x 2 structure); (c) e = 0.6; (d) e = 0.63; (e) e = 0.66 [8].
