Atomic scale study of Cu and Ni(111) surface erosion under cluster bombardment

被引：2

作者：

Zhurkin, EE ^{[1
]}

Kolesnikov, AS ^{[1
]}

机构：

[1] St Petersburg State Tech Univ, Dept Expt Nucl Phys, St Petersburg 195251, Russia

来源：

SEVENTH INTERNATIONAL WORKSHOP ON NONDESTRUCTIVE TESTING AND COMPUTER SIMULATIONS IN SCIENCE AND ENGINEERING | 2004年 / 5400卷

关键词：

cluster bombardment; Metropolis Monte-Carlo; molecular dynamics; sputtering; surface topography;

D O I：

10.1117/12.555385

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Erosion and evolution of Ni and Cu(111) surface topography under impact of small N-atomic clusters (N=1divided by55) with energies of 500 eV/atom is studied at atomic scale using a many-body potential. To provide final thermodynamics equilibrium state at non-zero (room) temperature, the Molecular Dynamics (MD) simulation was combined with statistical data sampling techniques in the frame of Metropolis Monte-Carlo (MMC) method. It was demonstrated that pronounced micro-crater surrounded by rim of ad-atoms is formed in the impact region above a threshold cluster size of around N=9. The impact of smaller clusters leads to formation of shallow craters or vacancies and ad-atom islands on a surface.

引用

页码：69 / 77

页数：9

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