Figure 6: Structure model of Pb layers.
From: Templated three-dimensional growth of quasicrystalline lead
(a) The atomic density distribution of i-Ag-In-Yb along the fivefold direction. The density is estimated in slabs of 0.01 Å thickness. The Yb rich at plane intersecting the centre of RTH cluster represents the topmost surface layer (z=0). Pb layers are formed at planes indicated by arrows. The nth shell of the RTH cluster is indicated in parentheses. (b–d) The in-plane atomic structure in a slab marked in a (b, 0≤z≤0.90 Å; c, 1.53≤z≤3.15 Å; d, 5.04≤z≤5.40 Å). (b) The surface In and Yb atoms are plotted in small red and green spheres, respectively, and are connected by thin lines. In sites are plotted by large grey spheres and connected by thick lines. These sites are identical to the first layer Pb (see inset). (c) Yb (large blue) and In (large magenta) sites correspond to the second and intermediate Pb layers, respectively. (d) Yb (large purple) corresponds to the third layer Pb. Inset of b–d is STM image of the first, second and third layer Pb, respectively.
