Monte Carlo simulation of the chemisorption kinetics and initial oxide formation on Al(111)

Monte Carlo (MC) simulations, based on the lattice–gas approach, of the coverage-dependent chemisorption kinetics and initial oxide formation on Al(111) are presented. Three different adsorption mechanisms for the early chemisorption phase, discussed in the literature, are considered: (i) “hot” dime...

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Veröffentlicht in:The Journal of chemical physics 2000-11, Vol.113 (20), p.8869-8872
Hauptverfasser: Oner, D. E., Chakarova, R., Zorić, I., Kasemo, B.
Format: Artikel
Sprache:eng
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Zusammenfassung:Monte Carlo (MC) simulations, based on the lattice–gas approach, of the coverage-dependent chemisorption kinetics and initial oxide formation on Al(111) are presented. Three different adsorption mechanisms for the early chemisorption phase, discussed in the literature, are considered: (i) “hot” dimer dissociation; (ii) abstractive dissociation; and (iii) “normal” dissociation without “hot” fragments. The simulation results are compared with the experimental scanning tunnel microscope (STM) results by Brune et al. [J. Chem Phys. 99, 2128 (1993)]. The best agreement between the MC simulations and the STM results is obtained with the hot dimer mechanism.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1326028