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A temperature dependent ZGB-like model: Entropic sampling simulations

Author

Listed:
  • Santos, E.D.
  • Ferreira, L.S.
  • Jorge, L.N.
  • Leão, S.A.
  • Caparica, A.A.

Abstract

By means of entropic sampling simulations we study a ZGB-like model. We consider an attractive nearest-neighbor CO–CO interaction when adsorbed on the system. We also take into account an attraction between oxygen atoms, but of lesser intensity. In analyzing the effect of the temperature increase in our catalytic system, we extract the temperature at which the output of CO is very large, which we call the critical desorption temperature. This output is abrupt, and our results lead to the conclusion that this transition from a CO poisoned state to a state in which the lattice sites are occupied by oxygen atoms, vacancies, and a few CO units, is a first order phase transition. A finite-size scaling analysis was performed to extract the critical desorption temperature for an infinite system.

Suggested Citation

  • Santos, E.D. & Ferreira, L.S. & Jorge, L.N. & Leão, S.A. & Caparica, A.A., 2022. "A temperature dependent ZGB-like model: Entropic sampling simulations," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 589(C).
    • Handle: RePEc:eee:phsmap:v:589:y:2022:i:c:s0378437121009006
    DOI: 10.1016/j.physa.2021.126663
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    References listed on IDEAS

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    1. Caparica, A.A. & Leão, Salviano A. & DaSilva, Claudio J., 2015. "Static critical behavior of the q-states Potts model: High-resolution entropic study," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 438(C), pages 447-453.
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