SEXAFS studies of adsorbate structure on Si and Ge surfaces
Abstract
Surface extended x-ray absorption fine structure studies of Cl, I, and Te adsorbed on Si and Ge surfaces reveal in some cases unexpected adsorption site variations and bond lengths. Iodine and chlorine occupy the atop site on both Si{111}7×7 and Ge{111}2×8 whereas Te occupies two distinct and previously unreported bridging sites on these surfaces. The Cl site identification on Si{111}7×7 is consistent with previously reported UPS and theoretical work whereas on Ge{111}2×8 it is not. Comparison between surface and bulk bond lengths suggests π bonding for Si surface atoms.
- Publication:
-
Physica B+C
- Pub Date:
- March 1983
- DOI:
- 10.1016/0378-4363(83)90653-8
- Bibcode:
- 1983PhyBC.117..786C