Scanning Tunneling Microscopy Study on c(6×2) Structure of Ag/Si(001)

The c(6×2) phase of a silver monolayer on Si(001) substrate was investigated by scanning tunneling microscopy (STM). The c(6×2) structure appeared when silver was deposited at room temperature and then annealed at temperatures between 100°C and 250°C, and always coexisted with a 2×3 structure. In co...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2001-06, Vol.40 (6S), p.4414
Main Authors: Osamu Takeuchi, Osamu Takeuchi, Masami Kageshima, Masami Kageshima, Hiroshi Sakama, Hiroshi Sakama, Akira Kawazu, Akira Kawazu
Format: Article
Language:English
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Summary:The c(6×2) phase of a silver monolayer on Si(001) substrate was investigated by scanning tunneling microscopy (STM). The c(6×2) structure appeared when silver was deposited at room temperature and then annealed at temperatures between 100°C and 250°C, and always coexisted with a 2×3 structure. In contrast, when silver was deposited onto a substrate at a temperature in this range, only the 2×3 structure grew. In the STM images with negative and positive sample bias voltages, one and two maxima were observed, respectively, in a c(6×2) unit cell. The finding of a lack of mirror symmetry in the unit cell reveals that the previously reported “single-domain” c(6×2) surface actually consists of two crystalographically equivalent domains on a single-domain substrate.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.40.4414