Journal Article

PreJuSER-30832

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On the mechanism of rapid mound decay

Giesen, M.FZJ* ; Ibach, H.FZJ*

2000
Elsevier Amsterdam

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Abstract: The observation of rapid mound decay events on Ag(lll) is reported. As in the case of Cu(lll), the critical terrace width for the onset of the rapid decay corresponds to about six atom rows. For Ag(lll), this distance is incompatible with the surface state model proposed earlier for Cu(lll). A new mechanism for the rapid decay events is considered, which involves steps in close proximity. It is shown that the observed mean terrace width in the final, rapid decay of a mound is well described by a combination of the random walk and shape fluctuations of the islands with the proposed local decay mechanism. Approximate activation energies for the new process are determined for Cu(lll) and Ag(lll). (C) 2000 Elsevier Science B.V. All rights reserved.

Keyword(s): J ; copper (auto) ; diffusion and migration (auto) ; growth (auto) ; low index single crystal surfaces (auto) ; scanning tunneling microscopy (auto) ; silver (auto) ; surface diffusion (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Grenzflächenforschung und Vakuumphysik (IGV)

Research Program(s):

1. Struktur und Dynamik der Grenzflächen (25.25.0)

Appears in the scientific report 2000
Notes: Nachtrag

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