Abstract
The structure of the reconstructions of the Si(111) and Ge(111) surfaces induced by adsorption of alkali metals has been determined on the basis of surface x-ray diffraction and low-energy electron diffraction measurements and density functional theory. The surface results primarily from the substrate reconstruction and shows a new bonding configuration consisting of consecutive fivefold and sixfold Si (Ge) rings in projection separated by channels containing the alkali metal atoms.
- Received 15 January 1998
DOI:https://doi.org/10.1103/PhysRevLett.80.3980
©1998 American Physical Society