ADSORBATE-INDUCED SURFACE STRESS - SULFUR, OXYGEN AND CARBON ON NI(100)

被引：100

作者：

SANDER, D

LINKE, U

IBACH, H

机构：

[1] Institut für Grenzflächenforschung und Vakuumphysik, KFA-Forschungszentrum Jülich, D-5170 Jülich

来源：

SURFACE SCIENCE | 1992年 / 272卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(92)91457-M

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：

We have determined the surface stress induced by the adsorption of sulfur, oxygen and carbon on Ni(100). As a result of a strong adsorbate-substrate interaction of these strongly chemisorbed systems, all adsorbates induce a considerable compressive surface stress on Ni(100). The c(2 x 2)-structures of sulfur, oxygen and carbon cause a surface stress of -6600 +/- 924 dyn/cm, -7500 +/- 1050 dyn/cm and -8500 +/- 1190 dyn/cm, respectively. The magnitude of the oxygen- and carbon-induced surface stress is in agreement with total-energy calculations, whereas the stress induced by sulfur is surprisingly high. Our results on C/Ni(100) support the concept of surface stress as the driving force for surface reconstruction.

引用

页码：318 / 325

页数：8

共 24 条

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