The electronic structure of Cu(110) and Ag(110) surfaces studied by reflection anisotropy spectroscopy

被引：50

作者：

Hansen, JK ^{[1
]}

Bremer, J ^{[1
]}

Hunderi, O ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Phys, N-7034 Trondheim, Norway

来源：

SURFACE SCIENCE | 1998年 / 418卷 / 02期

关键词：

copper; low index single crystal surfaces; oxygen; reflection spectroscopy; silver; surface electronic phenomena; surface reconstruction; surface structure;

D O I：

10.1016/S0039-6028(98)00756-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Experimental curves for the normalised azimuthal reflection difference Delta r/r for clean and oxygen-reconstructed Cu(110) and Ag(119) between 1.5 and 5.5 eV are presented. The copper spectra contain resonances at 2.1 eV and around 4 eV. Using expressions for the screened dipole-dipole interaction we have found that both the surface local-held effect and polarisation-dependent transitions between surface states at the (Y) over bar point of the surface Brillouin zone are responsible for the main features in the spectra. In the silver spectra thee is a resonance at 1.7 eV originating from polarisation-dependent transitions between surface states. The changes in the signals upon formation of ordered oxygen overlayers Cu(110)(2 x 1)-O and Ag(110)(2 x 1)-O are discussed. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：L58 / L61

页数：4

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