The effect of surface morphology upon the optical response of Au(110)
The effect of surface morphology upon the optical response of Au(110)
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DOI：
10.1016/s0039-6028(03)00131-6
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发表时间：
2003-06-10
期刊：
影响因子：
1.9
通讯作者：
Weightman, P
中科院分区：
文献类型：
--
作者：
Martin, DS;Blanchard, NP;Weightman, P
用反射各向异性谱(RAS)和扫描隧道显微镜(STM)研究了表面形貌对Au(110)晶体光学响应的影响。用扫描隧道显微镜观察到了Au(110)-(1×2)表面由于Ar离子轰击强度的增加而引起的表面形貌的变化，并与RA谱的变化进行了关联。结果表明，在3.0-5.0 eV的光子能区，RA谱对表面形貌特别敏感。这项研究强调了表面光学性质对表面结构的敏感性，并揭示了表面粗糙度开始影响RA响应的长度尺度。(C)2003 Elsevier Science B.V.保留所有权利。
The effect of surface morphology upon the optical response of Au(110) has been studied using reflection anisotropy spectroscopy (RAS) and scanning tunnelling microscopy (STM). Starting from a clean and well-characterised Au(110)-(1 x 2) surface, changes in surface morphology due to increasing Ar ion bombardment have been observed using STM and correlated to changes in the RA spectrum. It is found that the RA spectrum is particularly sensitive to surface morphology in the photon energy region 3.0-5.0 eV. The study highlights the sensitivity of surface optical properties to surface structure and reveals the length scale on which surface roughness starts to influence the RA response. (C) 2003 Elsevier Science B.V. All rights reserved.