Potential dependence of the non-linear polarizability of an Au(110) electrode
نویسنده
چکیده
The second harmonic generation (SHG) anisotropy of an Au(110) electrode has been studied over a wide potential range varying from [600 mV, where the surface is micro-faceted, to the unreconstructed surface at 600 mV. The interference SHG anisotropy (ISHGA), a new approach which allows one to measure directly the non-linear polarizability of the surface was used. The potential dependence of the symmetry components is discussed. A previously proposed model for the anisotropy of the Au(110) surface could be conÐrmed. Though rather weak, a quadrupole contribution has also been measured, showing a signiÐcant potential dependence.
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