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24 April 2024

» pubmed » pmid15447357

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Borderline magic clustering: the fabrication of tetravalent Pb cluster arrays on Si(111)-(7x7) surfaces
Shao-Chun Li ; Jin-Feng Jia ; Rui-Fen Dou ; Qi-Kun Xue ; Iskander G Batyrev ; S B Zhang ;
Date:	10 Sep 2004
Journal:	Phys Rev Lett, 93 (11), 116103
Abstract:	Well-ordered arrays of identical Pb clusters have been fabricated on a Si(111)-(7x7) substrate by the temperature-mediated surface clustering method. Interestingly, these clusters can easily transform into other forms when the growth temperature deviates slightly from the optimal values. In accord with experiments, first-principle total-energy calculations reveal several cluster structures centered on a mixed cluster model involving surface Pb and Si exchange. This borderline Pb/Si(111) system provides a unique, controlled way to study surface magic cluster formation and breakup dynamics.
Source:	PubMed, pmid15447357
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