The One-dimensional Property of Sr/Si(111)-3×2 Reconstructed Surface
Changzhou Institute of Technology, ChangZhou, JiangSu Province, China
The electronic and geometric structures of Sr/Si surface were investigated by Scanning Tunneling Microscopy. One-dimensional(1D) atomic concerted motion phenomenon was observed on this surface. Three reasons contribute to this phenomenon: First, low metal coverage of 1/6 monolayer with low energy occupation sites; second, weak interaction between Sr and Si substrate; third, surface vacancy formed in the high temperature annealing process and thermal fluctuation energy at room temperature. This findings lead to the conclusions that (3×2) reconstruction of Sr/Si system behave typical one-dimensional diffusion property at room temperature.
© The Authors, published by EDP Sciences, 2016
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