This title appears in the Scientific Report :
2000
On the mechanism of rapid mound decay
On the mechanism of rapid mound decay
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 m...
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Personal Name(s): | Giesen, M. |
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Ibach, H. | |
Contributing Institute: |
Institut für Grenzflächenforschung und Vakuumphysik; IGV |
Published in: | Surface science, 464 (2000) S. L697 - L702 |
Imprint: |
Amsterdam
Elsevier
2000
|
Physical Description: |
L697 - L702 |
Document Type: |
Journal Article |
Research Program: |
Struktur und Dynamik der Grenzflächen |
Series Title: |
Surface Science
464 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |