Diffusion of noninteracting and interacting lattice gases on heterogeneous surfaces: The bivariate random barrier model

Journal of Chemical Physics

Volumn 106, Issue 22, 1997, Pages 9320-9326

  Uebing, C ^a   Pereyra, V ^b   Zgrablich, G ^b  

^a MAX PLANCK INSTITUT FÜR EISENFORSCHUNG GMBH   (Germany)

^b UNIVERSIDAD NACIONAL DE SAN LUIS   (Argentina)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0004780166     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.474001     Document Type: Article

References (25)

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25. In Ref. 7 it has been shown that this finding is attributable to the coverage dependence of the correlation factor f. In the stability range of the ordered lattice gas phase, tracer diffusion proceeds via defects of the c(2×2) structure (Ref. 7), i.e., the c(2×2) ordering must be broken by diffusing adatoms. However, the measured small values of the correlation factor imply that defects formed by adatoms jumping out of stable c(2×2) coordination sites are immediately annihilated by backward jumps (Ref. 4).