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@ARTICLE{Giesen:39880,
author = {Giesen, M. and Baier, S.},
title = {{A}tomic transport processes on electrodes in liquid
environment},
journal = {Journal of physics / Condensed matter},
volume = {13},
issn = {0953-8984},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {PreJuSER-39880},
pages = {5009 - 5026},
year = {2001},
note = {Record converted from VDB: 12.11.2012},
abstract = {We present an overview on the method of analysing
equilibrium step fluctuations on metal electrodes to study
atomic transport processes at the solid/liquid interface. It
is demonstrated that this method provides an access road to
a quantitative understanding of surface mobility on metal
electrodes. Likewise it is shown that the investigation of
step fluctuations is a method to determine activation
energies and-with the help of recently introduced
temperature dependence experiments-pre-exponential factors.
We will show that the dependence of surface mobility on
electrode potential and on the electrolyte may be rather
complex. As examples, we present STM studies on stepped
Cu(111) and Ag(111) electrodes in aqueous electrolytes. For
Cu (111) in HCl, we find that the time dependence of step
fluctuations obeys a t(1/3)-law, which entails that step
fluctuations are dominated by fast attachment/detachment
kinetics at steps and slow terrace diffusion. For Ag(111) in
CuSO4 and H2SO4, an L(1/2)t(1/2)- dependence (with L the
step distance) near the potential of fast Ag dissolution is
observed. This time dependence corresponds to an atomic
transport based on terrace diffusion and transport through
the liquid. We also show that the results of temperature
dependent studies of step fluctuations on Ag(111) are in
excellent agreement with previous investigations concerning
the potential dependence.},
keywords = {J (WoSType)},
cin = {ISG-3},
ddc = {530},
cid = {I:(DE-Juel1)VDB43},
pnm = {Struktur und Dynamik von Grenzflächen},
pid = {G:(DE-Juel1)FUEK60},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000169172900026},
doi = {10.1088/0953-8984/13/21/325},
url = {https://juser.fz-juelich.de/record/39880},
}