Arsenic overlayer on Si(111): Removal of surface reconstruction
- 15 October 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 34 (8), 6041-6044
- https://doi.org/10.1103/physrevb.34.6041
Abstract
The complex reconstruction characteristic of annealed Si(111) surfaces is removed by the interaction of As with the clean Si(111) 7×7 surface. Surface-sensitive core-level spectroscopy measurements of the Si(111):As 1×1 surface reveal a well-ordered surface with threefold-coordinated As atoms replacing the Si atoms in the outermost layer. The absence of dangling bonds in this structure leads to an unreconstructed surface which is highly resistant to contamination.Keywords
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