中国物理B ›› 2011, Vol. 20 ›› Issue (3): 36402-036402.doi: 10.1088/1674-1056/20/3/036402

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Evidence for the anomalous scaling behaviour of the molecular-beam epitaxy growth equation

唐刚, 夏辉, 郝大鹏, 寻之朋, 温荣吉, 陈玉岭   

  1. Department of Physics, China University of Mining and Technology, Xuzhou 221116, China
  • 收稿日期:2010-05-14 修回日期:2010-10-10 出版日期:2011-03-15 发布日期:2011-03-15
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities (Grant No. 2010LKWL04), and the Youth Foundation of China University of Mining &

Evidence for the anomalous scaling behaviour of the molecular-beam epitaxy growth equation

Tang Gang(唐刚),Xia Hui(夏辉), Hao Da-Peng(郝大鹏),Xun Zhi-Peng(寻之朋), Wen Rong-Ji(温荣吉), and Chen Yu-Ling(陈玉岭)   

  1. Department of Physics, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2010-05-14 Revised:2010-10-10 Online:2011-03-15 Published:2011-03-15
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities (Grant No. 2010LKWL04), and the Youth Foundation of China University of Mining & Technology, China (Grant No. 2008A035).

摘要: According to the scaling idea of local slope, we investigate numerically and analytically anomalous dynamic scaling behaviour of (1+1)-dimensional growth equation for molecular-beam epitaxy. The growth model includes the linear molecular-beam epitaxy (LMBE) and the nonlinear Lai--Das Sarma--Villain (LDV) equations. The anomalous scaling exponents in both the LMBE and the LDV equations are obtained, respectively. Numerical results are consistent with the corresponding analytical predictions.

Abstract: According to the scaling idea of local slope, we investigate numerically and analytically anomalous dynamic scaling behaviour of (1+1)-dimensional growth equation for molecular-beam epitaxy. The growth model includes the linear molecular-beam epitaxy (LMBE) and the nonlinear Lai–Das Sarma–Villain (LDV) equations. The anomalous scaling exponents in both the LMBE and the LDV equations are obtained, respectively. Numerical results are consistent with the corresponding analytical predictions.

Key words: molecular-beam epitaxy, surface growth equation, anomalous scaling behaviour

中图分类号:  (Dynamic critical phenomena)

  • 64.60.Ht
05.70.Ln (Nonequilibrium and irreversible thermodynamics)