PolyU IR

PolyU Institutional Repository >
Mechanical Engineering >
ME Journal/Magazine Articles >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4196

Title: Schwoebel-Ehrlich barrier: from two to three dimensions
Authors: Liu, S. J.
Huang, Hanchen
Woo, Chung-ho
Subjects: Texture
Surface topography
Surface diffusion
Adsorbed layers
Surface energy
Molecular dynamics method
Issue Date: 6-May-2002
Publisher: American Institute of Physics
Citation: Applied physics letters, 6 May, 2002, v. 80, no. 18, p. 3295-3297.
Abstract: 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.
Description: DOI: 10.1063/1.1475774
Rights: © 2002 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in S. J. Liu, Hanchen Huang, & C. H. Woo , Appl. Phys. Lett. 80, 3295 (2002) and may be found at http://apl.aip.org/resource/1/applab/v80/i18/p3295_s1
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/4196
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:ME Journal/Magazine Articles

Files in This Item:

File Description SizeFormat
Liu_Schwoebel-Ehrlich_ Barrier_Dimension.pdf255.34 kBAdobe PDFView/Open

Facebook Facebook del.icio.us del.icio.us LinkedIn LinkedIn

All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
No item in the PolyU IR may be reproduced for commercial or resale purposes.


© Pao Yue-kong Library, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Powered by DSpace (Version 1.5.2)  © MIT and HP
Feedback | Privacy Policy Statement | Copyright & Restrictions - Feedback