Adsorbate azimuthal orientation from reflectance anisotropy spectroscopy

被引：85

作者：

Frederick, BG ^{[1
]}

Power, JR ^{[1
]}

Cole, RJ ^{[1
]}

Perry, CC ^{[1
]}

Chen, Q ^{[1
]}

Haq, S ^{[1
]}

Bertrams, T ^{[1
]}

Richardson, NV ^{[1
]}

Weightman, P ^{[1
]}

机构：

[1] Univ Liverpool, IRC Surface Sci, Liverpool L69 3BX, Merseyside, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.80.4490

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have determined the azimuthal orientation of an adsorbate on a metal surface from an intramolecular-transition-derived feature in reflectance anisotropy spectroscopy (RAS). Adsorption of 9-anthracene carboxylic acid onto p(2 x 1)O/Cu(110) led to an ordered structure with a strong (2%), derivativelike feature at 4.5 eV. Fresnel theory predicts the measured intensity, functional behavior, and sense of the RAS signal for the molecule aligned along [110]. IR measurements confirm that the molecular plane is perpendicular to the surface and STM measurements support the azimuthal orientation. We reassign the sense of the clean Cu(110) surface RA spectrum.

引用

页码：4490 / 4493

页数：4

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