LOCAL-STRUCTURE OF NH2 ON SI(100)-(2X1) AND ITS EFFECT ON THE ASYMMETRY OF THE SI SURFACE DIMERS

Authors
FRANCO N AVILA J DAVILA ME ASENSIO MC WOODRUFF DP SCHAFF O FERNANDEZ V SCHINDLER KM FRITZSCHE V BRADSHAW AM
Citation
N. Franco et al., LOCAL-STRUCTURE OF NH2 ON SI(100)-(2X1) AND ITS EFFECT ON THE ASYMMETRY OF THE SI SURFACE DIMERS, Physical review letters, 79(4), 1997, pp. 673-676
Citations number
35
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
4
Year of publication
1997
Pages
673 - 676
Database
ISI
SICI code
0031-9007(1997)79:4<673:LONOSA>2.0.ZU;2-R
Abstract
A scanned-energy mode photoelectron diffraction study of the Si(100)-( 2 x 1) surface with adsorbed NH2 provides quantitative determination o f key structural parameters previously only predicted from theoretical calculations. In particular, the N atoms occupy off-atop sites at a d imerized surface Si atom with N-Si bond lengths of 1.73 +/- 0.08 Angst rom and bond angle relative to the surface normal of 21 degrees +/- 4 degrees. The adsorption greatly reduces the Si dimer asymmetry relativ e to that of the clean surface.