Surface atomic structure of Ag/Si(111)-3×3
Abstract
Contrary to earlier reports, high-resolution scanning tunneling microscopy (STM) images of the Ag/Si(111)-3×3 surface show an inequivalent honeycomb structure at room temperature. The appearance of two different sizes in Ag trimers fits well with a recently reported inequivalent-triangle model instead of the widely accepted honeycomb-chain-trimer model. In addition, we found that Si trimers, which were “missing” in earlier STM observations, form a bright hexagonal pattern surrounded by a honeycomb chain from Ag trimers.
- Publication:
-
Physical Review B
- Pub Date:
- November 2006
- DOI:
- 10.1103/PhysRevB.74.201304
- Bibcode:
- 2006PhRvB..74t1304Z
- Keywords:
-
- 68.35.-p;
- 68.37.Ef;
- 81.16.Ta;
- Solid surfaces and solid-solid interfaces: Structure and energetics;
- Scanning tunneling microscopy;
- Atom manipulation