酸素存在下におけるSi(001)-2×1上でのチタンシリサイド形成の走査トンネル顕微鏡(STM)観察

概要

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Influence of the oxygen on island formation of titanium silicide on a Si(001) surface was studied by means of scanning tunneling microscopy to analyze the fundamental process of Metal-Oxide-Semiconductor (MOS) fabrication at the atomic scale. The shape of the nanoclusters differs from that formed without the oxide layer. The process is affected by desorption of SiO occurring at relatively lower temperature, while oxygen remains inside the silicide. With tunneling spectroscopy, the most of the clusters were identified to be crystallized in C49-TiSi2 even at 1073 K, indicating that transformation to C54-TiSi2 was disturbed by the presence of oxygen.
日本真空協会の論文
2009-08-20