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A study based on diffusion theory for exchange-reaction of RLA model

Zheng Xiao-Ping Fan Duo-Wang Zhang Pei-Feng

A study based on diffusion theory for exchange-reaction of RLA model

Zheng Xiao-Ping, Fan Duo-Wang, Zhang Pei-Feng
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  • Abstract views:  3746
  • PDF Downloads:  920
  • Cited By: 0
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  • Received Date:  04 April 2007
  • Accepted Date:  30 May 2007
  • Published Online:  15 January 2008

A study based on diffusion theory for exchange-reaction of RLA model

  • 1. (1)兰州城市学院电子信息科学与技术研究所,兰州 730070;兰州交通大学光电技术与智能控制教育部重点实验室,兰州 730070; (2)兰州交通大学光电技术与智能控制教育部重点实验室,兰州 730070; (3)兰州交通大学光电技术与智能控制教育部重点实验室,兰州 730070;兰州大学数学与统计学院,兰州 730000

Abstract: In the research work, on the basis of the classic diffusion theory we have advanced a novel model of the reaction limited aggregation (RLA), which involues the basic micro-processes. We firstly introduced the concept of exchange rate and have also simulated the growing process of surfactant-mediated epitaxial thin film growth with the kinetic Monte Carlo (KMC) method. By simulating, it was found that both surfactant atoms and adatoms would diffuse from one layer to another. This kind of diffusion mainly happens beween single atoms and the number of this diffusion increases with increasing growth temperature or increasing deposition depth. The exchange reaction of RLA model is the combination of several basic micro-processes. The majority of exchanges are not complete position exchange and the exchange ratio is not always equal to unity.

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