Phys. Rev. Lett. 61, 578–580 (1988)Structure of Iridium Adatom Cluster Nuclei on Ir(100)Received 11 April 1988; published in the issue dated 1 August 1988 A transition from chain- to island-type structure is observed in Ir adatom cluster nuclei on Ir(100). For five or fewer adatoms the stable configuration is a nucleus in the form of a linear chain, whereas for six or more adatoms a two-dimensional island configuration is stable. This unusual transformation indicates the presence of relatively long-range interactions between the Ir adatoms. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.61.578
DOI:
10.1103/PhysRevLett.61.578
PACS:
68.35.Rh, 61.50.Cj, 82.60.Nh
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