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Dynamical surface structures in multiparticle-correlated surface growths.

Yup Kim1, T S Kim, Hyunggyu Park

  • 1Department of Physics and Research Institute of Basic Sciences, Kyung Hee University, Seoul, 130-701, Korea.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|November 22, 2002
PubMed
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We studied interface fluctuation scaling in Q-mer and Q-particle deposition-evaporation models. Equilibrium surfaces show universal roughness (alpha=1/3), while early growth is nonuniversal, with different structures emerging in nonequilibrium conditions.

Area of Science:

  • Surface science and statistical physics.
  • Investigating complex system dynamics.

Background:

  • Understanding surface growth and scaling properties is crucial in materials science.
  • Deposition-evaporation models with conservation laws offer insights into complex interface dynamics.

Purpose of the Study:

  • To analyze the interface fluctuation width scaling in Q-mer and Q-particle-correlated deposition-evaporation models.
  • To explore equilibrium and nonequilibrium behaviors under a global conservation law (modulo Q).

Main Methods:

  • Investigated scaling properties of interface fluctuation width.
  • Applied global conservation law (particle number conserved modulo Q).
  • Analyzed both equilibrium and nonequilibrium surface evolution.

Main Results:

Related Experiment Videos

  • Equilibrium surfaces exhibit anomalous but universal roughness with alpha=1/3.
  • Early time evolution shows nonuniversal growth with beta dependent on models and Q.
  • Nonequilibrium surfaces display distinct behaviors: faceted for Q-mer, grooved for Q-particle-correlated.

Conclusions:

  • The Q-mer and Q-particle-correlated models exhibit distinct scaling behaviors and nonequilibrium structures.
  • The conservation law modulo Q leads to universal equilibrium roughness but nonuniversal early-time growth.
  • These models provide a framework for understanding diverse surface phenomena in constrained systems.