Sputtering of Au (111) induced by 16-keV Au cluster bombardment: Spikes, craters, late emission and fluctuations

被引：121

作者：

Colla, TJ ^{[1
]}

Aderjan, R ^{[1
]}

Kissel, R ^{[1
]}

Urbassek, HM ^{[1
]}

机构：

[1] Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.62.8487

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sputtering of a Au (111) surface induced by 16-keV Au-n cluster bombardment (n = 1,2,4,8,12) is studied by molecular-dynamics simulation. A statistically significant picture of the materials effects induced is obtained: With the exception of Au-1 bombartment, sputtering lasts at least 8 ps, a pronounced crater is formed as a rule, and large clusters emitted late from the crater rim contribute substantially to sputtenng. Sputter yield and crater size are strongly positively correlated in each individual impact event. For larger-cluster impact (n greater than or equal to 4), fluctuations in these two quantities shrink, giving the events a macroscopic appearance.

引用

页码：8487 / 8493

页数：7

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