One-Dimensional Growth of Iron Silicides on Si(553) Surface
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概要
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Iron-induced structures on Si(553) surface have been studied by scanning tunneling microscopy (STM) and field emission scanning electron microscopy (FE-SEM). Hut-shaped islands are formed at 550 °C at a Fe coverage of 0.1 monolayer (ML). STM images reveal that each island consists of facets parallel to Si(111) and Si(110). A reported superstructure of iron silicide, $2\times 2$, is observed on the surface of the Si(111) facet. At 620–680 °C, the hut island grows one-dimensionally toward the [$1\bar{1}0$] direction, while the trapeziform island is formed at a higher temperature of 700 °C. The formation mechanism is discussed on the basis of results of a detailed analysis of the length, width and surface coverage of the islands.
- 2009-08-25
著者
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Ueda Kazuyuki
Nano High Tech Res. Center Toyota Technological Inst.
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Yoshimura Masamichi
Nano High-tech Research Center Toyota Technological Insitute
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Hara Shinsuke
Nano High-Tech Research Center, Toyota Technological Institute, Nagoya 468-8511, Japan
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