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000039880 0247_ $$2DOI$$a10.1088/0953-8984/13/21/325
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000039880 084__ $$2WoS$$aPhysics, Condensed Matter
000039880 1001_ $$0P:(DE-Juel1)4744$$aGiesen, M.$$b0$$uFZJ
000039880 245__ $$aAtomic transport processes on electrodes in liquid environment
000039880 260__ $$aBristol$$bIOP Publ.$$c2001
000039880 300__ $$a5009 - 5026
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000039880 440_0 $$03703$$aJournal of Physics: Condensed Matter$$v13$$x0953-8984
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000039880 520__ $$aWe 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.
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000039880 7001_ $$0P:(DE-Juel1)VDB5710$$aBaier, S.$$b1$$uFZJ
000039880 773__ $$0PERI:(DE-600)1472968-4$$a10.1088/0953-8984/13/21/325$$gVol. 13, p. 5009 - 5026$$p5009 - 5026$$q13<5009 - 5026$$tJournal of physics / Condensed matter$$v13$$x0953-8984$$y2001
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000039880 9141_ $$y2001
000039880 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000039880 9201_ $$0I:(DE-Juel1)VDB43$$d31.12.2006$$gISG$$kISG-3$$lInstitut für Grenzflächen und Vakuumtechnologien$$x0
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