Journal Article

PreJuSER-32153

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Adlayer Structures Probed by Distance Tunneling Spectroscopy for Au(111)/H2SO4 Cu2

Nagy, G.FZJ* ; Wandlowski, T.FZJ*

2003
Oldenbourg München

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Please use a persistent id in citations: doi:10.1524/zpch.217.5.587.20456

Abstract: We performed a series of distance tunnelling characteristics measurements for the system Au(111)/0.05 M H2SO4 + 1 mM Cu2+ to understand, if it is possible to map the liquid part of the double layer perpendicular to the electrode surface. We found that we probed the double layer in a distance range where we do not penetrate into the inner Helmholtz layer. Nevertheless, the tip is sufficiently close to the metal surface to address adlayer features showing sensitivity toward long-range ordered structures. The bias between the STM tip and the sample drops in the inner Helmholtz layer, and electronic overlap exists between the adsorbed layer and the metal surface. Molecular contributions to the electronic structure of ordered adlayers appear to be detectable. At larger distances from the surface the average barrier height was found to be about 1 eV, practically independent on the electrode potential.

Keyword(s): J ; double layer (auto) ; STM (auto) ; STS (auto) ; barrier height (auto) ; CuUPD (auto) ; anions (auto) ; Au(111) (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Grenzflächen und Vakuumtechnologien (ISG-3)

Research Program(s):

1. Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik (I01)

Appears in the scientific report 2003

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Database coverage:
JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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