Abstract
Using scanning tunneling microscopy (STM), we have studied the formation and structure of the surface phase. It has been found that both the formation process and atomic arrangement of the surface differ substantially from those known for reconstructions induced by other alkali and alkaline earth metals, since the Si(100)2×3-Na phase is the only one in which the top Si layer undergoes a substantial reordering. The Si-atom density in the surface phase has been determined to be 1/3 ML. A structural model of the Si(100)2×3-Na reconstruction has been proposed, and its registry to STM images has been discussed.
- Received 22 December 1997
DOI:https://doi.org/10.1103/PhysRevB.58.4972
©1998 American Physical Society