Structural Study of the Si(111)(√<3>×√<3>)R30° -Au Surface Using One-Beam Reflection High Energy Electron Diffraction Intensity Rocking Curve Analysis
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概要
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The structure of the Si(111)(√<3>×√<3>)R30° -Au surface has been investigated using rocking curves of reflection high energy electron diffraction at one-beam condition. It has been found that frequently this surface forms through formation of the metastable Si(111)(2√<21>×2√<21>)R10.9°-Au structure, which transforms gradually and irreversibly into the √<3>×√<3>-Au one. One-beam rocking curves for all proposed models of the √<3>×√<3>-Au surface have been calculated and compared with the experimental one. A conjugate honeycomb-chained-trimer model proposed by Ding et al. [Surf. Sci. 275(1992) L691] has been found to be the only one that fits the experimental data satisfactorily. The calculation result can be fitted to the experimental one by introduction of additional density of Au and Si atoms which are asstumed to be incorporated into domain walls. Thereby, interlayer distances and atomic densities of surface parallel layers have been determined and atomic densities corresponding to the domain walls and commensurate phase regions have been separated.
- 社団法人応用物理学会の論文
- 1997-07-15
著者
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Khramtsova Elena
Institute Of Automation And Control Processes
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Ichimiya Ayahiko
Department Of Quantum Engineering Nagoya University
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Ichimiya Ayahiko
Department Of Applied Physics Faculty Of Engineering Nagoya University
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