Atomic processes in vacancy island motion on Ag(111) |
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| Institution: | 1. Kansas State University, Department of Physics, Cardwell Hall 116, Manhattan, KS 66506, USA;2. J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506-2601, USA;1. Key Laboratory for Magnetism and Magnetic Materials, Ministry of Education, Lanzhou University, Lanzhou, 730000, China;2. Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou, 730000, China;1. School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom;2. Department of Chemical and Polymer Engineering, University of Engineering and Technology, Lahore, Pakistan;1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;2. Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, College of Physical Science and Technology, Sichuan University, Chengdu 610064, China;3. School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China;4. National Key Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | We present results of molecular dynamics simulations of the motion of monatomic-deep vacancy islands on Ag(111), using interaction potentials from the embedded atom method. The individual processes appearing in a large set of runs, at three different temperatures, are identified. From the statistics thus collected, we find that the predominant mechanism underlying the diffusion of vacancy islands on Ag(111) is the diffusion of atoms along the periphery of the vacancy islands. |
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