Structure, stability, and surface diffusion of clusters: Irx on Ir(111)

Diffusion rates of Cu adatoms on Cu(111) in the presence of an adisland nucleated at fcc or hcp sites

“…N S is the total number of jumps during the time interval t, n i r i is the displacement vector corresponding to the i th jump (n i = 1, 2, 3... for a simple, double, triple... jump, respectively, and r i = a) and, for uncorrelated jumps (i.e., < r i .r j >= 0), if t run is large enough: (14) where N n is the number of jumps of length na observed during the period t run .…”

“…A large number of theoretical and experimental works has been devoted to homoepitaxial growth, e.g., on Pt [3,4,5,6,7], Cu [8,9,10], Ag [11,12], Rh [13,14,15], Al [16,17,18]... In this respect, the understanding of adisland shapes is of fundamental importance since they can indirectly influence the growth mode.…”

New Growth Mode through Decorated Twin Boundaries

“…However, on Ir(111) small mobile Ir clusters (dimers, trimers, etc.) occupy also faulted surface sites [7], which give rise to the homogeneous nucleation of fault islands [8]. Although at the beginning of deposition 12% of all islands formed were fault islands (compare Fig.…”

Diffusion and submonolayer island growth during hyperthermal deposition on Cu(100) and Cu(111)

“…They can even oscillate as a function of the island size [10,14,8]. These oscillations can be in part understood by the surface geometry: certain close packed island configurations can be more stable than others on certain surfaces [19].…”

“…One of the most important questions that still remains open is the role of island diffusion, since for mobile islands the aggregation rates in the RE approach depend explicitly on the diffusion coefficients D s of islands of different sizes s. Island diffusion on surfaces has been studied both theoretically [7,8,9] and experimentally [10,11,12,13,14,15,16]. While in the large island limit the size dependence of the island diffusion coefficients can be classified based on simple basic processes [17], for smaller islands D s depends on the geometric and energetic details of the underlying surface, and can be a complicated, non-monotonic function of s [18,19].…”