Modified herringbone reconstruction on Au(111) induced by self-assembled Azure A islands

Frederic Rossel, Pierre Brodard, Francois Patthey, Neville V. Richardson, Wolf-Dieter Schneider

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Upon submonolayer deposition of Azure A molecules onto reconstructed Au(1 1 1), two-dimensional quasi-rectangular islands are observed by low-temperature scanning tunneling microscopy. Strikingly, the 22 x root 3 reconstruction with alternating hexagonal close packed (hcp) and face centered cubic (fcc) domains of the native Au(1 1 1) surface layer is found to be strongly modified underneath the self-assembled islands of Azure A molecules. The bridge-hcp-bridge-fcc-bridge period of 63 angstrom on clean Au(1 1 1) is expanded by about 12% and occasionally reaches even 22%. This increase of the unreconstructed fcc areas underneath the molecular islands reflects a partial lifting of the reconstruction caused by the interaction between the adsorbed molecules and the outermost Au atoms at the molecule-metal interface. (C) 2008 Elsevier B.V. All rights reserved.

Original languageEnglish
Number of pages3
JournalSurface Science
Volume602
DOIs
Publication statusPublished - 15 Jul 2008

Keywords

  • scanning tunneling microscopy
  • self-assembly
  • organic molecules
  • surface relaxation and reconstruction
  • STM
  • SURFACE
  • MONOLAYERS
  • EPITAXY
  • SULFUR

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