Binding energies between unlike atoms determined from island densities
Autor(en): | Einax, Mario Dieterich, Wolfgang Maass, Philipp |
Stichwörter: | adsorbed layers; binding energy; diffusion; GROWTH; island structure; monolayers; Monte Carlo methods; NUCLEATION; Physics; Physics, Applied | Erscheinungsdatum: | 2009 | Herausgeber: | AMER INST PHYSICS | Journal: | JOURNAL OF APPLIED PHYSICS | Volumen: | 105 | Ausgabe: | 5 | Zusammenfassung: | Measurements of island densities during submonolayer nucleation and growth can be used to determine adatom diffusion constants and effective binding energies between like atoms. While this ``nucleation route'' is well established for monocomponent systems, we here present a new procedure to determine effective binding energies between unlike atoms by analyzing island densities obtained from codeposition of different components. The procedure is based on a theory developed recently [M. Einax , Phys. Rev. Lett. 99, 016106 (2007); W. Dieterich , Eur. Phys. J. Spec. Top. 161, 151 (2008)] and its practical applicability is demonstrated by generating experimental surrogate data by kinetic Monte Carlo simulations. |
ISSN: | 00218979 | DOI: | 10.1063/1.3086315 |
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