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Surface Restructuring, Thermal Desorption, Kinetic Bistability, and Chemical Waves

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Abstract

Adsorbate-induced surface restructuring is treated in the framework of a statistical lattice-gas model taking into account the possibility of formation of a metastable substrate structure on the clean surface and stabilization of this structure by adsorbate–substrate interaction. With these assumptions, surface restructuring is described in terms of the theory of first-order phase transitions. The proposed model is then employed to analyze (i) the influence of adsorbate-induced changes in the surface on thermal desorption spectra and (ii) the effect of surface restructuring on the propagation of chemical waves in the 2A + B2 → 2AB reaction. The interplay between reaction-diffusion kinetics and surface restructuring is shown to result in formation of chemical waves with atomistically sharp spatial features.

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Authors and Affiliations

  1. Department of Applied Physics, Chalmers University of Technology, S-412 96, Göteborg, Sweden

    V. P. Zhdanov & B. Kasemo

  2. Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    V. P. Zhdanov

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  1. V. P. Zhdanov
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  2. B. Kasemo
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Correspondence to V. P. Zhdanov.

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Zhdanov, V.P., Kasemo, B. Surface Restructuring, Thermal Desorption, Kinetic Bistability, and Chemical Waves. Journal of Statistical Physics 90, 79–101 (1998). https://doi.org/10.1023/A:1023243432497

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