Progress in characterizing submonolayer island growth: Capture-zone distributions, growth exponents, & hot precursors

26th IUPAP Conference on Computational Physics

物理学;计算机科学

Einstein, Theodore L.^1,2 ; Pimpinelli, Alberto^1,3 ; González, Diego Luis^1,4 ; Morales-Cifuentes, Josue R.^1,2

Dept. Physics, University of Maryland, College Park

MD

20742-4111, United States^1

CMTC, University of Maryland, College Park

MD

20742-4111, United States^2

Rice Quantum Institute and MSNE Department, Rice University, Houston

TX

77005, United States^3

Departamento de Fisica, Universidad Del Valle, Cali

A.A. 25360, Colombia^4

关键词: Analysis techniques;    Critical nucleus size;    Diffusion limited aggregation;    Fragmentation models;    Island size distribution;    Submonolayer island growth;    Voronoi tessellations;    Wigner Distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/640/1/012024/pdf
DOI  :  10.1088/1742-6596/640/1/012024

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In studies of epitaxial growth, analysis of the distribution of the areas of capture zones (i.e. proximity polygons or Voronoi tessellations with respect to island centers) is often the best way to extract the critical nucleus size i. For non-random nucleation the normalized areas s of these Voronoi cells are well described by the generalized Wigner distribution (GWD) Pβ(s) = asβexp(-bs2), particularly in the central region 0.5