Surface and bulk core-level shifts of the Si(111)√3 √3-Ag surface: Evidence for a charged√3 √3layer
- 13 April 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 58 (15) , 1555-1558
- https://doi.org/10.1103/physrevlett.58.1555
Abstract
Si 2p and Ag 4d photoelectron spectra have been measured for the Si(111)√3 × √3 -Ag surface at both surface- and bulk-sensitive photon energies. A dramatic shift of the bulk Si 2p component for the √3 × √3 surface has been observed and is attributed to the presence of an inherently charged √3 × √3 layer. A single component of surface Si 2p levels is found for the √3 × √3 surface. Discussion of structural and growth models of the √3 -Ag surface is made.Keywords
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