Global Synchronization via Homogeneous Nucleation in Oscillating Surface Reactions

Autor:	W. von Niessen, V. N. Kuzovkov, O. Kortlüke
Rok vydání:	1999
Předmět:	Surface (mathematics) Physics Synchronization (alternating current) Stochastic resonance Quantum mechanics Phase (matter) Monte Carlo method Nucleation General Physics and Astronomy Coupling (probability) Molecular physics Noise (electronics)
Zdroj:	Physical Review Letters. 83:3089-3092
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.83.3089
Popis:	The mechanism leading to globally synchronized oscillations in the $\mathrm{CO}+{\mathrm{O}}_{2}/\mathrm{Pt}\left(110\right)$ reaction system is investigated by means of Monte Carlo simulations. The model considers the reconstruction of the surface via phase border propagation and spontaneous phase nucleation. The reason for global oscillations turns out to be the spontaneous phase nucleation. This nucleation, which is modeled as a weak noise process, results in a random creation of dynamic defects and leads to global synchronization via stochastic resonance. The mechanism of global coupling via the gas phase, as it is proposed to date, does not occur.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81778c1b38979f34b10bb21e5fc0dcfa https://doi.org/10.1103/physrevlett.83.3089 Zobrazit plný text záznamu