Monolayer thick silver films were grown on an Ni(100) surface using direct
ion beam deposition of Ag-107(+) ions with 20 eV kinetic energy and the sub
strate at 25 degrees C. Deposition was performed by means of a mass-selecte
d, low-energy, ultra-high vacuum ion beam system with a well-defined ion en
ergy. The films were analyzed in situ by time-of-flight scattering and reco
iling spectrometry (TOF-SARS) and by low energy electron diffraction (LEED)
. Classical ion trajectory simulations were used to model the TOF-SARS spec
tra. Results of the TOF-SARS spectra and azimuthal scans are consistent wit
h the growth of a monolayer Ag film with a fcc (111) structure on the Ni(10
0) surface. The deposited films exhibited a faint hexagonal c(2 x 8) LEED p
attern. Molecular dynamic simulations of the deposition process are in agre
ement with the experimental observations. The growth of such isotopically p
ure metal monolayers at room temperature with controlled orientations provi
des the opportunity for exploring a variety of unique physical properties,
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