Resolving the coverage puzzle of the Pb/Si(111)-root 7x root 3 phase

TitleResolving the coverage puzzle of the Pb/Si(111)-root 7x root 3 phase
Publication TypeJournal Article
Year of Publication2009
AuthorsSvec M, Chab V, Tringides MC
Journal TitleJournal of Applied Physics
Volume106
Pages053501
Date Published09/01
ISBN Number0021-8979
Accession NumberISI:000269850300021
Keywordsdevils staircase, ising-model, lead, pb, pb/si(111), scanning tunnelling microscopy, si(111), silicon, stoichiometry, surface phase transformations, surface structure, temperatures
Abstract

The dense Pb/Si(111)-alpha-root 3 x root 3 has been extensively studied over the last 20 years with scanning tunneling microscopy (STM) and surface diffraction to determine its structure and its phase transformations with temperature T and coverage theta. Two apparently incompatible models have been proposed for the structure and have been debated in the literature. One model was based on a coverage assignment theta=1 ML. The other model was based on assigning coverage in the range 1.2 ML

URL<Go to ISI>://000269850300021
DOI10.1063/1.3197033