Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5423368 | Surface Science | 2010 | 5 Pages |
Abstract
Using scanning tunneling microscopy observations and density functional theory calculations, regularities of the Al magic cluster array self-assembly on Si(1 0 0) surface has been elucidated. While a single Al cluster occupies an area of 4a Ã 3a, an ordered Al-cluster array exhibits a 4 Ã 5 periodicity, as the clusters in the array are separated by the 4a Ã 2a “spacers”. The plausible structural model for the “spacer” was proposed in which the “spacer” is arranged as an ordinary 4a Ã 3a-Al cluster in which the central atomic row with the topmost Si atom is missing. Appearance of the “spacers” in the Al-cluster array was found to reduce formation energy of the array. Ability to incorporate the rows of Al-“spacers” into the completed 4 Ã 3 In-cluster array was demonstrated.
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Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
V.G. Kotlyar, Yu.V. Luniakov, A.V. Zotov, A.A. Saranin,