Xiquan Yang

China University of Mining Technology, Suchow, Jiangsu Sheng, China

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Publications (2)3.46 Total impact

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    ABSTRACT: The growth of the modified Family model and the Etching model on the Sierpinski carpet is studied by means of numerical simulations. The evolving interface of the aggregates is described by the well-established Family–Vicsek dynamic scaling approach. The results of the modified Family model prove the universality of the fractional Langevin equation introduced by Lee and Kim [S.B. Lee, J.M. Kim, Phys. Rev. E 80 (2009) 021101]. The Etching model also shows good scaling behavior. We conjecture that the systematic deviations of the data found in the ballistic deposition [C.M. Horowitz, F. Romá, E.V. Albano, Phys. Rev. E 78 (2008) 061118] may be due to the finite-size effects of the Ballistic Deposition model.
    No preview · Article · Nov 2010 · Physica A: Statistical Mechanics and its Applications
  • Zhipeng Xun · Gang Tang · Kui Han · Hui Xia · Dapeng Hao · Xiquan Yang · Wei Zhou
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    ABSTRACT: In order to study the microscopic physical mechanisms of roughness surfaces exhibiting the anomalous scaling behavior, the Wolf–Villain model in 1+1 and 2+1 dimensions is investigated by the kinetic Monte-Carlo simulation on long time and large length scale (the growth time and the system size are respectively extended to t=229, for 1+1 dimensions, and t=221, L×L=512×512 for 2+1 dimensions). In the 2+1-dimensional simulations, the noise reduction technique is employed so as to eliminate the crossover effects in the growth process. Our calculations show that the Wolf–Villain model in 1+1 dimensions very probably exhibits intrinsic anomalous scaling behavior in the time and length simulation range of this paper, and the 2+1-dimensional Wolf–Villain model leads to a pyramidal mounded morphology. Some properties of the mounded pattern in the 2+1-dimensional Wolf–Villain model are discussed in the final part of this presentation.
    No preview · Article · Jun 2010 · Physica A: Statistical Mechanics and its Applications