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Title: Experimental and theoretical investigation of single Cu, Ag and Au atoms adsorbed on Si(111)-7×7
Authors: Zhang, Chun
Chen, Gang
Wang, Kedong
Yang, Hongwei
Su, Tao
Chan, Che-Ting
Loy, Michael M.
Xiao, Xudong
Keywords: Elemental semiconductors
Adsorbed layers
Scanning tunnelling microscopy
Ab initio calculations
Dangling bonds
Surface reconstruction
Issue Date: 5-May-2005
Citation: Physical review letters, v. 94, p. 176104, 2005
Abstract: Using scanning tunneling microscopy and first principles calculations, the adsorption sites of single Cu, Ag and Au atoms on the Si(111)-7×7 surface have been systematically investigated and identified. Despite of the monovalence, these atoms were found to adsorb at high coordination sites, seeking to saturate the maximum number of dangling bonds. The stable adsorption sites were further observed to be distinctly different in the faulted and unfaulted half unit cells, showing an asymmetry that has never been observed for many other adsorbates.
Rights: Phys. Rev. Lett. © copyright (2005) American Physical Society. The Journal's web site is located at
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