Potential dependence of the non-linear polarizability of an Au(110) electrode

Potential dependence of the non-linear polarizability of an Au(110) electrode
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Au(110) 电极非线性极化率的电势依赖性

DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
B. Pettinger
B. Pettinger
中科院分区：
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文献类型：
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作者：
C. Bilger;B. Pettinger

文献摘要

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研究了Au（110）电极的二次谐波产生（SHG）各向异性，其电位范围从-600 mV（表面为微面）到600 mV（表面为非重构表面）不等。干涉SHG各向异性（ISHGA）是一种可以直接测量表面非线性极化率的新方法。讨论了对称分量的势依赖性。先前提出的Au（110）表面各向异性模型可以得到证实。虽然相当微弱，但也测量到四极贡献，显示出显著的潜在依赖性。
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 confirmed. Though rather weak, a quadrupole contribution has also been measured, showing a significant potential dependence.