Wang, Xiao-Chun and Zhao, Han-Yue and Chen, Nan-Xian and Zhang, Yong (2010) Theoretical Investigations into Self-Organized Ordered Metallic Semi-Clusters Arrays on Metallic Substrate. NANOSCALE RESEARCH LETTERS, 5 (6). pp. 1020-1026. ISSN 1931-7573 (Print) 1556-276X (Online)
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Using the energy minimization calculations based on an interfacial potential and a first-principles total energy method, respectively, we show that (2 × 2)/(3 × 3) Pb/Cu(111) system is a stable structure among all the [(n − 1) × (n − 1)]/(n × n) Pb/Cu(111) (n = 2, 3,…, 12) structures. The electronic structure calculations indicate that self-organized ordered Pb semi-clusters arrays are formed on the first Pb monolayer of (2 × 2)/(3 × 3) Pb/Cu(111), which is due to a strain-release effect induced by the inherent misfits. The Pb semi-clusters structure can generate selective adsorption of atoms of semiconductor materials (e.g., Ge) around the semi-clusters, therefore, can be used as a template for the growth of nanoscale structures with a very short periodic length (7.67 Å).
|Subjects:||Material Science > Nanochemistry|
|Deposited By:||M T V|
|Deposited On:||03 Jun 2010 14:40|
|Last Modified:||03 Jun 2010 14:40|
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