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000008079 084__ $$2WoS$$aElectrochemistry
000008079 1001_ $$0P:(DE-HGF)0$$aPötting, K.$$b0
000008079 245__ $$aIsland dynamics on charged silver electrodes: Kinetic Monte-Carlo simulations
000008079 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2009
000008079 300__ $$a4494 - 4500
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000008079 440_0 $$01776$$aElectrochimica Acta$$v54$$x0013-4686$$y19
000008079 500__ $$aK.R and W.S. gratefully acknowledge financial support by the Landes-stiftung Baden-Wurttemberg and by the Deutsche Forschungsgerneinschaft (SCHM 344/35-1). RQ. gratefully acknowledges financial support by the Deutscher Akademischer Austausch Dienst (DAAD). N.L. gratefully acknowledges financial support by the Deutsche Forschungsgerneinschaft and CONICET. The authors also thank Dr. M.C. Gimenez for providing us with her KMC program, and Dr. Y. Gohda for calculating the dipole moments.
000008079 520__ $$aThe fluctuations of steps and the shapes of islands on metal surfaces generally depend strongly on the electrode potential, an effect that has been attributed to the interaction of local surface dipole moments with the double-layer field. In order to understand the details of this effect,we have calculated the relevant energies and dipole moments for the diffusion processes that govern the fluctuations of steps and island shapes on Ag(1 0 0). The corresponding rates have been used in kinetic Monte-Carlo simulations to explore the dynamics of these structures. Due to the field-dipole interactions the mobility of the surface becomes larger with increasing electrode potential. Fourier analysis allows us to determine the step stiffness and the kink energy, and from the shape of the islands we have obtained the line tension. All three quantities decrease with increasing double-layer field. (C) 2009 Elsevier Ltd. All rights reserved.
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000008079 65320 $$2Author$$aKinetic Monte-Carlo
000008079 65320 $$2Author$$aStep fluctuations
000008079 65320 $$2Author$$aStep stiffness
000008079 65320 $$2Author$$aSurface dipole moments
000008079 65320 $$2Author$$aLine tension
000008079 65320 $$2Author$$aKink energy
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000008079 7001_ $$0P:(DE-HGF)0$$aLuque, N.B.$$b1
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000008079 7001_ $$0P:(DE-HGF)0$$aSchmickler, W.$$b4
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