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Revisiting the Structure of thep(4×4)Surface Oxide on Ag(111)

Authors :
Karsten Reuter
Jan Knudsen
Angelos Michaelides
Matthias Scheffler
Erik Lægsgaard
Joachim Schnadt
Flemming Besenbacher
Ronnie T. Vang
Source :
Physical Review Letters. 96
Publication Year :
2006
Publisher :
American Physical Society (APS), 2006.

Abstract

Scanning tunneling microscopy (STM) and density-functional theory are used to reexamine the structure of the renowned p(4×4)-O/Ag(111) surface oxide. The accepted structural model [C. I. Carlisle et al., Phys. Rev. Lett. 84, 3899 (2000)] is incompatible with the enhanced resolution of the current STM measurements. An "Ag6 model" is proposed that is more stable than its predecessor and accounts for the coexistence of the p(4×4) and a novel c(3×5sqrt(3))rect phase. This coexistence is an indication of the dynamic complexity of the system that until now has not been appreciated.

Details

ISSN :
10797114 and 00319007
Volume :
96
Database :
OpenAIRE
Journal :
Physical Review Letters
Accession number :
edsair.doi...........80f43faa27626e5bf44aa9103827e477
Full Text :
https://doi.org/10.1103/physrevlett.96.146101