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          Institute: Fritz-Haber-Institut     Collection: Chemical Physics     Display Documents



  history
ID: 222333.0, Fritz-Haber-Institut / Chemical Physics
Quantization of electronic states in individual oxide-supported silver particles
Authors:Nilius, Niklas; Kulawik, Maria; Rust, Hans-Peter; Freund, Hans-Joachim
Language:English
Date of Publication (YYYY-MM-DD):2004-11-20
Title of Journal:Surface Science
Journal Abbrev.:Surf. Sci.
Volume:572
Issue / Number:2-3
Start Page:347
End Page:354
Copyright:© 2004 Elsevier B.V. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The electronic properties of Ag particles on Al2O3/NiAl(1 1 0) have been investigated by low-temperature scanning tunnelling microscopy and spectroscopy. Conductance measurements on single clusters revealed a series of equidistant resonances around the Fermi level. The energy separation between these peaks decreases with increasing cluster size. The resonances were interpreted as a discretization of the electronic states along the cluster height. In conductance images of the Ag particles, resonance levels appear as concentric circles of enhanced conductance with a diameter depending on the sample bias. This behaviour reflects the influence of the tip electric field on level positions in the clusters.
Free Keywords:Scanning tunneling microscopy; Scanning tunneling spectroscopies; Clusters; Surface electrical transport (surface conductivity, surface recombination, etc.); Silver; Aluminum oxide
External Publication Status:published
Document Type:Article
Communicated by:Hans-Joachim Freund
Affiliations:Fritz-Haber-Institut/Chemical Physics/Scanning Probe Spectroscopy
Fritz-Haber-Institut/Chemical Physics/Low Temperature STM
Fritz-Haber-Institut/Chemical Physics/Chemical Physics
Identifiers:URL:http://www.sciencedirect.com/science?_ob=ArticleUR...
DOI:10.1016/j.susc.2004.09.010
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