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The second-harmonic response of single-crystal silver electrodes obtained with an interference method

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Bilger,  Christoph
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Pettinger,  Bruno
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Beltramo, G. L., Bilger, C., Pettinger, B., & Schmickler, W. (1998). The second-harmonic response of single-crystal silver electrodes obtained with an interference method. Chemical Physics, 238(3), 473-480. doi:10.1016/S0301-0104(98)00343-7.


Cite as: http://hdl.handle.net/21.11116/0000-0006-C362-F
Abstract
The second-harmonic response of several single-crystal silver electrodes is investigated at a long wavelength. In contrast to earlier experiments, the phase of the signal is obtained directly by an interference method. By comparing measurements at two different angles of incidence, the Rudnick-Stern coefficient characterizing the response perpendicular to the surface can be estimated; for Ag(100) and Ag(111) it agrees fairly well with calculations based on the jellium model. For the Ag(110) surface, the twofold amplitude depends on the electrode potential; in addition, a contribution with a three-fold symmetry is observed. These unexpected features are probably caused by a facetting of the Ag(110) surface. (C) 1998 Elsevier Science B.V. All rights reserved.