Binding energies between unlike atoms determined from island densities

Journal article

Authors / Editors

Einax, Mario

Research Areas

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Publication Details

Author list: Einax M, Dieterich W, Maass P

Publisher: American Institute of Physics

Place: MELVILLE

Publication year: 2009

Journal: Journal of Applied Physics (0021-8979)

Journal acronym: J APPL PHYS

Volume number: 105

Issue number: 5

Number of pages: 3

ISSN: 0021-8979

eISSN: 1089-7550

Languages: English-Great Britain (EN-GB)

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Abstract

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.

Keywords

adsorbed layers, binding energy, diffusion, island structure, monolayers, Monte Carlo methods, Nucleation

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