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Core-level photoelectron spectroscopy study of the Au/Si(111) 5X2, alpha-root 3X root 3, beta-root 3X root 3, and 6X6 surfaces

In English

Författare

Summary, in English

Submonolayer coverages of Au on Si(111), known as the 5 X 2, alpha- root3 X root3, beta- root3 X root3, 2root21 X 2root21, and 6 X 6 surfaces, have been investigated by low-energy electron diffraction and photoelectron spectroscopy. Three Si 2p surface components on the 5 X 2 surface, and four surface components on the alpha- root3 X root3, quenched beta- root3 X root3, and 6 X 6 surfaces have been identified by surface sensitive high resolution core-level spectroscopy. The photoemission data of the alpha- root3 X root3, the 6 X 6 and the quenched beta- root3 X root3 phases are discussed in terms of extra Au adatoms on the root3 X root3 surface described by the ideal 1 ML conjugate honeycomb chained trimer model. The similarity between the 6 X 6 and the quenched beta- root3 X root3 surface is obvious from the decomposition of the Si 2p spectra, suggesting an order-disorder relation.

Publiceringsår

2002

Språk

Engelska

Publikation/Tidskrift/Serie

Physical Review B (Condensed Matter and Materials Physics)

Volym

65

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

American Physical Society

Ämne

  • Physical Sciences
  • Natural Sciences

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1098-0121