title: Non-arrhenius behavior of the island density in metal heteroepitaxy: Co on Cu(001).
abstract: We present a combined theoretical and experimental study of island nucleation and growth in the deposition of Co on Cu(001)-a prototype for understanding heteroepitaxial growth involving intermixing. Experimentally, ion scattering is employed. Using density-functional theory, we obtain energy barriers for the various elementary processes and incorporate these into a kinetic Monte Carlo program to simulate the heteroepitaxial growth. Both the simulations and the experiments show a unique N-shape dependence of the island density on temperature that stems from the interplay and competition of the different processes involved.
authors.affiliation: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Pentcheva
authors.forename: K A
authors.initials: KA
authors.lastname: Fichthorn
authors.forename: M
authors.initials: M
authors.lastname: Scheffler
authors.forename: T
authors.initials: T
authors.lastname: Bernhard
authors.forename: R
authors.initials: R
authors.lastname: Pfandzelter
authors.forename: H
authors.initials: H
authors.lastname: Winter