STM/STS Studies of Self-Organized Growth of Iron Suicide Nanocrystals on Vicinal Si(111) Surface

A. Wawro, S. Suto, R. Czajka, A. Kasuya

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The evolution of iron silicide structure grown by solid state epitaxy on Si(111) vicinal surface was investigated by scanning tunnelling microscopy. The reactions, which occur on the surface, are compared for two various Fe coverages: 0.33 and 2 monolayers. The annealing at 250°C does not enable substantial recovery of the surface ordering, deteriorated by Fe deposition at room temperature. The onset of 2 × 2 surface reconstruction is observed upon annealing at 400°C. A three-dimensional growth tendency of iron silicide crystallites on a bare Si(111) 7 × 7 surface was found at 700°C. In the case of 2 monolayer coverage crystallites nucleate along the edges of substrate terraces forming a regular array of nanometer size dots. Basing on atomically resolved spectroscopic effects and statistical considerations, structure of iron silicide nanocrystallites as well as Schottky-like character of the barrier at the interface between metallic crystallite and semiconducting substrate is deduced.

Original languageEnglish
Pages (from-to)303-319
Number of pages17
JournalActa Physica Polonica A
Issue number3-4
Publication statusPublished - 2003
EventProceedings of the 3rd International Symposium Scanning Probe Spectroscopy and Related Methods - Poznan, Poland
Duration: 2003 Jul 162003 Jul 19


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