First-Order Phase Transition in a Modified Ziff-Gulari-Barshad Model with Self-oscillating Reactant Coverages

被引：11

作者：

Sinha, I. ^{[1
]}

Mukherjee, A. K. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF STATISTICAL PHYSICS | 2012年 / 146卷 / 04期

关键词：

ZGB model of surface reaction; Surface reconstruction; CO desorption; Discontinuous phase transitions; ELEY-RIDEAL STEP; KINETIC OSCILLATIONS; CO OXIDATION; CATALYTIC-OXIDATION; SURFACE; BEHAVIOR;

D O I：

10.1007/s10955-011-0414-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using kinetic Monte Carlo simulations, we study the effect of oscillatory kinetics due to surface reconstructions on Ziff-Gulari-Barshad (ZGB) model discontinuous phase transition. To investigate the transition, we do extensive finite size scaling analysis. It is found that the discontinuous transition still exists. On inclusion of desorption in the model, the order-parameter probability distribution broadens but remains bimodal. That is, the first-order phase transition becomes weaker with increase in desorption rate.

引用

页码：669 / 686

页数：18

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