Scanning tunneling microscopy at multiple voltage biases of stable “ring-like” Ag clusters on Si(111)–(7×7)

Since more than twenty years it is known that deposition of Ag onto Si(111)–(7×7) leads under certain conditions to the formation of so-called “ring-like” clusters, that are particularly stable among small clusters. In order to resolve their still unknown atomic structure, we performed voltage dependent scanning tunneling microscopy (STM) measurements providing interesting information about the electronic properties of clusters which are linked with their atomic structure. Based on a structural model of Au cluster on Si(111)–(7×7) and our STM images, we propose an atomic arrangement for the two most stable Ag “ring-like” clusters.


Published in:
Surface Science, 606, 23-24, 1755-1759
Year:
2012
Publisher:
Amsterdam, Elsevier
ISSN:
0039-6028
Keywords:
Note:
IMT-NE Number: 666
Laboratories:




 Record created 2012-09-20, last modified 2018-09-13

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