Sputtering of Au (111) induced by 16-keV Au cluster bombardment: Spikes, craters, late emission, and fluctuations
- 15 September 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 62 (12) , 8487-8493
- https://doi.org/10.1103/physrevb.62.8487
Abstract
Sputtering of a Au (111) surface induced by 16-keV cluster bombardment is studied by molecular-dynamics simulation. A statistically significant picture of the materials effects induced is obtained: With the exception of bombardment, 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 sputtering. Sputter yield and crater size are strongly positively correlated in each individual impact event. For larger-cluster impact fluctuations in these two quantities shrink, giving the events a macroscopic appearance.
Keywords
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