... high resolution STM to further probe the self assembly phenomena of Co-Si magic clusters in the following section 308 CHAPTER 6. 2 Co-Si magic clusters 6. 2.1 Types of cluster configuration and number ... 1 2 3 6 (i) 4 (ii) (iv) (iii) Figure 6. 17 (i)- (iv) shows a Co-Si magic cluster diffusing within a half (7x7) unit cell 9 8 7 6 (ii) (iii) 2 (i) (iv) Figure 6. 18 (i)- (iv) shows a Co-Si magic cluster ... clusters group into various 2D cluster configurations of i = 1, 2, 3, 4, 5, and 7, where i is the number of clusters within each formation In particular, the i =6 cluster configuration consisting of clusters...