THEORY OF SURFACE STRESS AND SURFACE RECONSTRUCTION

被引：143

作者：

NEEDS, RJ ^{[1
]}

GODFREY, MJ ^{[1
]}

MANSFIELD, M ^{[1
]}

机构：

[1] UNIV WARWICK,DEPT PHYS,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND

来源：

SURFACE SCIENCE | 1991年 / 242卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(91)90269-X

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 investigate the stresses that are present, even in equilibrium, at solid surfaces. First-principles calculations of the surface stress tensor for the aluminium, iridium, platinum and gold (111) surfaces are reported, which indicate the presence of a tensile surface stress in each case. We compare our results for aluminium with those for jellium and discuss the origins of the surface stress. We investigate the role that surface stress may play in driving surface reconstructions in which the density of surface atoms is altered from the corresponding value for the terminated bulk structure. A simple model is discussed which illustrates the competition between the various forces involved in such a reconstruction.

引用

页码：215 / 221

页数：7

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