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Dynamic scaling in a ballistic deposition model for a binary system

El-Nashar1, Cerdeira

  • 1Department of Physics, Faculty of Science, Ain Shams University, 11566 Cairo, Egypt and The Abdus Salam International Centre for Theoretical Physics, P.O. Box 586, 34100 Trieste, Italy.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|November 23, 2000
PubMed
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This study introduces a two-species ballistic deposition model for surface growth. The model

Area of Science:

  • Surface science and materials physics.
  • Computational modeling and simulation.

Background:

  • Understanding surface evolution under vapor deposition is crucial for materials science.
  • Existing models may not fully capture the complexity of multi-species deposition.

Purpose of the Study:

  • To introduce and investigate a novel ballistic deposition model for two-species surface growth.
  • To analyze the dynamical evolution and universality classes of the resulting surface morphology.

Main Methods:

  • Development of a tunable ballistic deposition model with a probability parameter (P) for two particle types.
  • Simulations conducted in 2+1 dimensions incorporating local surface diffusion.
  • Analysis of surface roughness and comparison with established universality classes.

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Main Results:

  • The model forms rough surfaces with dynamical evolution deviating from the Kardar-Parisi-Zhang universality class.
  • Increased dominance of surface diffusion shifts the model away from the Edwards-Wilkinson universality class.

Conclusions:

  • The proposed two-species ballistic deposition model exhibits unique surface growth dynamics.
  • The findings suggest limitations of current universality class predictions for complex deposition scenarios.