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Core-level photoelectron spectroscopy study of the Au/Si(111) 5×2, α-√3×√3, β-√3×√3, and 6×6 surfaces
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
MAX-lab, Lund University, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Surface and Semiconductor Physics. Linköping University, The Institute of Technology.
2002 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 65, no 3Article in journal (Refereed) Published
Abstract [en]

Submonolayer coverages of Au on Si(111), known as the 5×2, α-√3×√3, β-√3×√3, 2√21×2√21, and 6×6 surfaces, have been investigated by low-energy electron diffraction and photoelectron spectroscopy. Three Si 2p surface components on the 5×2 surface, and four surface components on the α-√3×√3, quenched β-√3×√3, and 6×6 surfaces have been identified by surface sensitive high resolution core-level spectroscopy. The photoemission data of the α-√3×√3, the 6×6 and the quenched β-√3×√3 phases are discussed in terms of extra Au adatoms on the √3×√3 surface described by the ideal 1 ML conjugate honeycomb chained trimer model. The similarity between the 6×6 and the quenched β-√3×√3 surface is obvious from the decomposition of the Si 2p spectra, suggesting an order-disorder relation.

Place, publisher, year, edition, pages
2002. Vol. 65, no 3
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Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-47908DOI: 10.1103/PhysRevB.65.035314ISI: 000173448900073OAI: oai:DiVA.org:liu-47908DiVA: diva2:268804
Available from: 2013-03-27 Created: 2009-10-11 Last updated: 2017-12-13Bibliographically approved

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Zhang, HanminUhrberg, Roger

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