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- Title
Formation of linearly linked Fe clusters on Si(111)-7 × 7-CHOH surface.
- Authors
Ding, Wanyu; Ju, Dongying; Guo, Yuanyuan; Tanaka, Ken-ichi; Komori, Fumio
- Abstract
The Fe atoms were deposited on the Si(111)-7 × 7 surface, which has been saturated with the CHOH molecules. Then, the Fe clusters were formed on Si(111)-7 × 7-CHOH surface and in situ observed by the scanning tunneling microscopy (STM). The STM images showed that with the increase of Fe clusters, the size of clusters was about 5 nm and they self-assembled in straightly linked chain crossing the step to lower or upper terrace. X-ray photoelectron spectroscopy (XPS) was in situ carried out on the surface of Fe/Si(111)-7 × 7-CHOH samples before and after the introduction of thin air (4.5 × 10 Langmuir) into the STM chamber. The XPS results showed that the Fe clusters are stable in the abovementioned thin air condition at room temperature. Based on the STM and XPS results, the driving force making one-dimensional straightly linked chain structure might be the magnetic force of the Fe clusters. The formation of straightly linked Fe clusters chains suggests the formation of single magnetic domain Fe clusters. PACS: 07.79.Cz, 81.15.-z, 75.75.Fk
- Subjects
IRON clusters; SILICON compounds; SURFACE chemistry; SATURATION (Chemistry); SCANNING tunneling microscopy; MONOSACCHARIDES
- Publication
Nanoscale Research Letters, 2014, Vol 9, Issue 1, p1
- ISSN
1931-7573
- Publication type
Article
- DOI
10.1186/1556-276X-9-377