Theoretical calculations of the scanning-tunneling-microscopy images of the Si(111)√3 × √3 -Ag surface
- 15 October 1991
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (15) , 8330-8333
- https://doi.org/10.1103/physrevb.44.8330
Abstract
The scanning-tunneling-microscopy (STM) images of the Si(111)√3 × √3- Ag surface have been calculated from first principles for a structural model of the surface recently proposed, or the modified honeycomb-chained-trimer model, which is consistent with reported photoemission and inverse-photoemission spectra. The results show excellent agreement with reported STM images. Each bright spot corresponding to a protrusion in the reported STM images represents neither Ag nor Si atoms but rather corresponds to the center of each surface Ag trimer.Keywords
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