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

Mariotti, Nicolas; Didiot, Clément; Schwier, Eike Fabian; Monney, Claude; Perret-Aebi, Laure-Emmanuelle; Battaglia, Corsin; Garnier, Michael G.; Aebi, Philipp

doi:10.1016/j.susc.2012.05.002

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Journal article

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

Mariotti, Nicolas Département de physique, Université de Fribourg and Fribourg Center for Nanomaterials, Switzerland
Didiot, Clément Département de physique, Université de Fribourg and Fribourg Center for Nanomaterials, Switzerland
Schwier, Eike Fabian Département de physique, Université de Fribourg and Fribourg Center for Nanomaterials, Switzerland
Monney, Claude Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
Perret-Aebi, Laure-Emmanuelle École Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics Laboratory, Neuchâtel, Switzerland
Battaglia, Corsin École Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics Laboratory, Neuchâtel, Switzerland
Garnier, Michael G. Département de physique, Université de Fribourg and Fribourg Center for Nanomaterials, Switzerland
Aebi, Philipp Département de physique, Université de Fribourg and Fribourg Center for Nanomaterials, Switzerland

03.05.2012

Published in:

Surface Science. - 2012, vol. 606, no. 23-24, p. 1755-1759

English 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.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language