Study of the Si(111)"1×1"–Au Surface Using Reflection High-Energy Electron Diffraction and Scanning Tunneling Microscopy
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概要
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The initial stages of Si(111)–Auinterface formation have been studied using reflection high-energy electron diffraction (RHEED), scanning tunneling microscopy (STM) and intensity rocking curve analysis of one-beam RHEED.An equilibrium phase diagram of the Au/Si(111) system has been determined forthe Au coverage range of 0–0.7 monolayers and substrate temperatures of 750–850°C. Our RHEED data and "quench and look" STM observations showthat two different types of "1×1"–Au-stabilized surface phasescan be formed depending on the magnitude of interaction betweenAu atoms.The interaction between Au atoms was found to be weak when they are separated by a distance of more than about five 1 ×1 unit cells of the Si(111) surface kept at temperatures higher than 800°C.At different conditions, Au atoms cluster into trimers which areassumed to form all other Si(111)–Au surface phases.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 1998-12-15
著者
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Sakai Hiroto
Department Of Cardiovascular Medicine Hokkaido University School Of Medicine
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KHRAMTSOVA Elena
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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HAYASHI Kazuhiko
Department of Advanced Prosthodontics, Division of Cervico-Gnathostomatology, Programs for Applied Biomedicine, Hiroshima University Graduate School of Biomedical Sciences
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Ichimiya Ayahiko
Department of Quantum Engineering, Nagoya University,
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