Kinetics of mesa overlayer growth: Climbing of adatoms onto the mesa top

被引：9

作者：

Han, Yong ^{[1
,2
]}

Liu, Feng ^{[2
]}

Li, Shao-Chun ^{[3
]}

Jia, Jin-Feng ^{[3
]}

Xue, Qi-Kun ^{[3
]}

Lee, Byeong-Joo ^{[4
]}

机构：

[1] US DOE, Ames Lab, Ames, IA 50011 USA

[2] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA

[3] Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China

[4] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, South Korea

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 02期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2827200

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have calculated the energy barriers for an adatom climbing up onto a Pb mesa top either over a facet-facet edge or through a facet-step joint, using a modified embedded atom method. We found that the second process is not only thermodynamically more favorable than the first one but also much faster with a diminishing barrier. Our results provide a plausible explanation for the experimentally observed intriguing growth behavior of a Pb mesa. The underlying mechanisms can be generally applicable to other systems. (c) 2008 American Institute of Physics.

引用

页数：3

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