1ST-PRINCIPLES THEORY OF ATOMIC-SCALE FRICTION

被引：247

作者：

ZHONG, W ^{[1
]}

TOMANEK, D ^{[1
]}

机构：

[1] MICHIGAN STATE UNIV,CTR FUNDAMENTAL MAT RES,E LANSING,MI 48824

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.64.3054

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We determine the atomic-scale friction associated with a layer of Pd atoms moving across a graphite substrate from ab initio total-energy calculations. We evaluate the friction energy caused by variations of the chemical bond strength and work against an external force (load) due to variations of the bond length along the trajectory. We find only a very small dependence of the Pd-graphite interaction on the adsorption site which gives rise to a very small friction coefficient 10-2 for loads near 10-8 N. We also find to increase with load in agreement with recent experiments. © 1990 The American Physical Society.

引用

页码：3054 / 3057

页数：4

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