Anisotropic Rearrangement of the Substrate Atoms during Ar Bombardment on Pd(0 0 1) Surface

Title
Anisotropic Rearrangement of the Substrate Atoms during Ar Bombardment on Pd(0 0 1) Surface
Authors
김상필김병현김해리이광렬정용재서지근김재성
Keywords
Molecular Dynamics; Sputtering; Simulaiton; Cascade induced rearrangement; MD simulation; Pd(0 0 1) surface; Surface nanostructuring
Issue Date
2011-10
Publisher
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms
Citation
VOL 269, NO 21, 2605-2609
Abstract
Using a three-dimensional molecular dynamics (MD) simulation, we investigated the atomic scale rearrangement that occurs on a Pd(0 0 1) surface after energetic bombardment by Ar at room temperature. High energy Ar bombardment provoked the significant rearrangement of Pd atoms in a ballistic manner with a fourfold symmetric lateral distribution aligned along the (1 1 0) direction. The MD simulation of uniform Ar bombardment at normal incidence on a Pd surface reproduced the experimentally observed fourfold symmetric nano-scale surface structure. The present result supports that the ballistic rearrangement of the substrate atoms plays an important role in the ion induced surface structure evolution.
URI
http://pubs.kist.re.kr/handle/201004/40674
ISSN
0168-583X
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