Phys. Rev. Lett. 93, 116103 (2004) [4 pages]Borderline Magic Clustering: The Fabrication of Tetravalent Pb Cluster Arrays on Si(111)-(7×7) SurfacesReceived 15 May 2004; published 10 September 2004 Well-ordered arrays of identical Pb clusters have been fabricated on a Si(111)-(7×7) 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.116103
DOI:
10.1103/PhysRevLett.93.116103
PACS:
81.07.–b, 61.46.+w, 68.37.Ef, 68.43.Bc
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