Schwoebel-Ehrlich barrier: from two to three dimensions

被引：103

作者：

Liu, SJ ^{[1
]}

Huang, HC ^{[1
]}

Woo, CH ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 18期

关键词：

D O I：

10.1063/1.1475774

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Schwoebel-Ehrlich barrier-the additional barrier for an adatom to diffuse down a surface step-dictates the growth modes of thin films. The conventional concept of this barrier is two dimensional (2D), with the surface step being one monolayer. We propose the concept of a three-dimensional (3D) Schwoebel-Ehrlich barrier, and identify the 2D to 3D transition, taking aluminum as a prototype and using the molecular statics method. Our results show that: (1) substantial differences exist between the 2D and 3D barriers; (2) the transition completes in four monolayers; and (3) there is a major disparity in the 3D barriers between two facets; further, alteration of this disparity using surfactants can lead to the dominance of surface facet against thermodynamics. (C) 2002 American Institute of Physics.

引用

页码：3295 / 3297

页数：3

共 29 条

[1]

BOCKSTEDTE M, IN PRESS COMPUT MAT

[2] ATOMIC VIEW OF SURFACE SELF-DIFFUSION - TUNGSTEN ON TUNGSTEN [J].

EHRLICH, G ;

HUDDA, FG .

JOURNAL OF CHEMICAL PHYSICS, 1966, 44 (03) :1039-&

[3] DIFFUSION OF INDIVIDUAL ADATOMS [J].

EHRLICH, G .

SURFACE SCIENCE, 1994, 299 (1-3) :628-642

[4] ORIGIN OF OXYGEN-INDUCED LAYER-BY-LAYER GROWTH IN HOMOEPITAXY ON PT(111) [J].

ESCH, S ;

HOHAGE, M ;

MICHELY, T ;

COMSA, G .

PHYSICAL REVIEW LETTERS, 1994, 72 (04) :518-521

[5] Interlayer self-diffusion on stepped Pt(111) [J].

Feibelman, PJ .

PHYSICAL REVIEW LETTERS, 1998, 81 (01) :168-171

[6] Lattice Monte Carlo models of thin film deposition [J].

Gilmer, GH ;

Huang, HC ;

de la Rubia, TD ;

Dalla Torre, J ;

Baumann, F .

THIN SOLID FILMS, 2000, 365 (02) :189-200

[7] Atom movement and binding on surface clusters: Pt on Pt(111) clusters [J].

Golzhauser, A ;

Ehrlich, G .

PHYSICAL REVIEW LETTERS, 1996, 77 (07) :1334-1337

[8] DEVELOPMENT OF PREFERRED ORIENTATION IN POLYCRYSTALLINE TIN LAYERS GROWN BY ULTRAHIGH-VACUUM REACTIVE MAGNETRON SPUTTERING [J].

GREENE, JE ;

SUNDGREN, JE ;

HULTMAN, L ;

PETROV, I ;

BERGSTROM, DB .

APPLIED PHYSICS LETTERS, 1995, 67 (20) :2928-2930

[9]

HSIUNG L, COMMUNICATION

[10] An atomistic simulator for thin film deposition in three dimensions [J].

Huang, HC ;

Gilmer, GH ;

de la Rubia, TD .

JOURNAL OF APPLIED PHYSICS, 1998, 84 (07) :3636-3649

← 1 2 3 →