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

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

doi:10.12693/APhysPolA.104.303

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Acta Physica Polonica A

2003 | 104 | 3-4 | 303-319

Article title

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

Authors

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

Content

http://przyrbwn.icm.edu.pl/APP/PDF/104/A104Z320.pdf [remote]

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Abstracts

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.

Keywords

61.46.+w 68.35.-p 68.37.Ef 81.10.Jt

Publisher

Institute of Physics, Polish Academy of Sciences

Journal

Acta Physica Polonica A

Year

2003

Volume

104

Issue

3-4

Pages

303-319

Physical description

Dates

published

2003-09/10

received

2003-07-16

References

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Document Type

Publication order reference

YADDA identifier

bwmeta1.element.bwnjournal-article-appv104n320kz

Identifiers

DOI

10.12693/APhysPolA.104.303