Wang XC, Zhao HY, Chen NX, Zhang Y. Theoretical investigations into self-organized ordered metallic semi-clusters arrays on metallic substrate.
NANOSCALE RESEARCH LETTERS 2010;
5:1020-1026. [PMID:
20672088 PMCID:
PMC2893967 DOI:
10.1007/s11671-010-9595-0]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2010] [Accepted: 03/29/2010] [Indexed: 05/29/2023]
Abstract
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).
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