A Scanning Tunneling Microscopy Investigation of Adsorption and Clustering of Potassium on the Si(111)7×7 Surface
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概要
- 論文の詳細を見る
The adsorption process of potassium on the Si(111)7×7 surface is studied by scanning tunneling microscopy (STM).At low coverages, an STM image reveals that potassium (K) atoms adsorb preferentially on the faulted-halves of the 7×7 unit cells rather ionically so that they do not appear in the filled-state image but present bright images in the empty-state mode.The coverage at which both the faulted and the unfaulted regions are uniformly occupied by K is estimated to be about 6/49.At coverages higher than this, the K atoms tend to form neutral clusters, preferentially in the faulted-regions.The electronic structure around the clusters is modified markedly, which suggests a local charge redistribution.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 1998-06-30
著者
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Nishigaki Satoshi
Department Of Electrical And Electronic Engineering Toyohashi University Of Technology
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Watanabe Akihiko
Department Of Anesthesiology Sapporo Medical University School Of Medicine
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Naitoh Masamichi
Department Of Electrical Engineering Kyushu Institute Of Technology
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Nishigaki Satoshi
Department of Electrical Engineering, Kyushu Institute of Technology, 1-1 Sensui, Tobata, Kitakyushu 804-8550, Japan
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Watanabe Akihiko
Department of Electrical Engineering, Kyushu Institute of Technology, 1-1 Sensui, Tobata, Kitakyushu 804-8550, Japan
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