Abstract
Recent experimental studies have re-
vealed that well-ordered one-dimensional column structures are formed
via self-assembly during two-component epitaxial growth of a vari-
ety of materials, including diluted magnetic semiconductors and high-
Tc superconductors. Here we use kinetic Monte Carlo simulations to
study the morphological evolution of a two-component epitaxial system,
based on a (1+1)-dimensional lattice model. We �nd that in systems
where the atom-atom interactions obey the relationship of EAB <
(EAA+EBB)/2, ordered nanoscale columns can be formed during the
growth. The dependence of the ordering on the growth temperature
and deposition rate and on the relative concentration of the two com-
ponents is also explored.
1Supported by DMSE/BES of USDOE and USNSF.
