English, Article edition: IN SITU STM INVESTIGATION OF Ge NANOSTRUCTURES WITH AND WITHOUT Sb ON GRAPHITE SUNIL SINGH KUSHVAHA; ZHIJUN YAN; MAO-JIE XU; ...

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Bookmark: http://trove.nla.gov.au/version/84877
Physical Description
  • article
Language
  • English

Edition details

Title
  • IN SITU STM INVESTIGATION OF Ge NANOSTRUCTURES WITH AND WITHOUT Sb ON GRAPHITE
Author
  • SUNIL SINGH KUSHVAHA
  • ZHIJUN YAN
  • MAO-JIE XU
  • WENDE XIAO
  • XUE-SEN WANG
Physical Description
  • article
Notes
  • Germanium was deposited onto highly oriented pyrolytic graphite (HOPG) with and without antimony in ultra-high vacuum. The surface morphology was analyzed using in situ scanning tunneling microscopy (STM) at room temperature (RT). The film grows exclusively in 3D island mode and was affected significantly by substrate defects. At initial stage, nucleation of cluster occurred at step edges and defect sites. Later, we found various types of Ge nanostructures on HOPG in different deposition conditions and stages, including cluster chains, cluster islands, nanowires, and double layer ramified islands at RT. Compact Ge islands were observed when depositing at a substrate temperature of 450 K or after an annealing at 600 K following RT deposition. In addition, the pre-deposited Sb on graphite enhances the sticking probability and suppresses the surface diffusion of Ge atoms, resulting in a significant increase in Ge cluster island density on HOPG terraces.
  • Germanium, graphite, antimony, cluster, surfactant, scanning tunneling microscopy (STM)
  • RePEc:wsi:srlxxx:v:13:y:2006:i:02:p:241-249
Language
  • English
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