ATOMIC-STRUCTURE OF THE ALPHA-AL2O3(0001) (ROOT-31 X ROOT-31)R + - 9-DEGREES RECONSTRUCTION/

Authors
RENAUD G VILLETTE B VILFAN I BOURRET A
Citation
G. Renaud et al., ATOMIC-STRUCTURE OF THE ALPHA-AL2O3(0001) (ROOT-31 X ROOT-31)R + - 9-DEGREES RECONSTRUCTION/, Physical review letters, 73(13), 1994, pp. 1825-1828
Citations number
21
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
73
Issue
13
Year of publication
1994
Pages
1825 - 1828
Database
ISI
SICI code
0031-9007(1994)73:13<1825:AOTA(X>2.0.ZU;2-C
Abstract
The projected atomic structure of the alpha-Al2O3(0001)(root 31 x root 31)R +/- 9 degrees reconstruction has been analyzed by means of the g razing incidence x-ray diffraction technique, which is not limited by the surface insulating character. It consists of two Al planes whose s tructure is close to that of metallic Al(111). This overlayer is rotat ionally reconstructed, is commensurate with the substrate, and display s strong nonlinear static distortion waves. This layer, oxygen deplete d, explains why the surface properties are dramatically changed.