adatoms;
computer simulations;
copper;
palladium;
semi-empirical models and model calculations;
alloys;
surface structure;
morphology;
roughness;
and topography;
D O I:
10.1016/j.susc.2003.12.044
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
A modeling analysis of the growth mode of submonolayer amounts of Pd on Cu(111) for different coverages and temperatures reproduces the known experimental behavior, including the formation of a surface alloy, the presence of subsurface Pd, formation of Pd bands off terrace steps, and weak short range surface ordering. An atom-by-atom analysis of the energetics using the BFS method for alloys provides a simple explanation of the underlying mechanisms leading to the observed behavior. (C) 2004 Elsevier B.V. All rights reserved.