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dc.contributor.author
Sanchez Varretti, Fabricio Orlando
dc.contributor.author
Bulnes, Fernando Manuel
dc.contributor.author
Ramirez Pastor, Antonio Jose
dc.date.available
2020-11-09T12:30:11Z
dc.date.issued
2019-03-15
dc.identifier.citation
Sanchez Varretti, Fabricio Orlando; Bulnes, Fernando Manuel; Ramirez Pastor, Antonio Jose; Cluster-exact approximation applied to adsorption with non-additive lateral interactions; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 518; 15-3-2019; 145-157
dc.identifier.issn
0378-4371
dc.identifier.uri
http://hdl.handle.net/11336/117897
dc.description.abstract
The adsorption of single particles with non-additive lateral interactions has been studied by combining Monte Carlo (MC) simulations and theoretical modeling. The traditional assumption of additive lateral interactions is replaced with a more general one including non-pairwise interactions. It is assumed that the energy linking a certain atom with any of its nearest neighbors strongly depends on the state of occupancy in the first coordination sphere of such an adatom. Two theoretical models have been used in the present study: (i) the first, which we called cluster-exact approximation (CA), is based on exact calculations of configurations on finite cells. An efficient algorithm allows us to calculate the detailed structure of the configuration space for m = l×l cells; and (ii) the second is a generalization of the classical quasi-chemical approximation (QCA) in which non-additive lateral interactions have been included. The process is monitored by following the surface coverage as a function of the chemical potential (adsorption isotherm). Results from CA and QCA are compared with MC simulations. A good agreement is obtained between theoretical and MC results, with CA being the most accurate approximation in all cases. This finding supports the validity of the exact counting of states on finite cells as a starting point to predict the behavior of a system governed by non-additive lateral interactions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
EQUILIBRIUM THERMODYNAMICS AND STATISTICAL MECHANICS
dc.subject
NON-ADDITIVE LATERAL INTERACTIONS
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LATTICE-GAS MODELS
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ADSORPTION ISOTHERMS
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MONTE CARLO SIMULATIONS
dc.subject.classification
Física de los Materiales Condensados
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Cluster-exact approximation applied to adsorption with non-additive lateral interactions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-07-22T15:45:45Z
dc.journal.volume
518
dc.journal.pagination
145-157
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Sanchez Varretti, Fabricio Orlando. Universidad Tecnológica Nacional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
dc.description.fil
Fil: Bulnes, Fernando Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
dc.description.fil
Fil: Ramirez Pastor, Antonio Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
dc.journal.title
Physica A: Statistical Mechanics and its Applications
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.physa.2018.11.067
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0378437118315048
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