Abstract
Behaviour of a sub-monolayer Au-coverage on the vicinal Si(111) has been studied by RHEED. For the sample misoriented by 8.46 ° towards the [1̄1̄2] azimuthal direction at the coverage equal to 0.20 ML of Au, the RHEED pattern showed almost perfect distribution of the monoatomic Si(111) steps with the staircase width equal to 18.52 ± 0.66 A ̊ . Au-induced order was identified with the (755) facet of Si with a one-dimensional chains of Au. Upon further increase of the Au deposition this regular distribution was gradually disturbed and at the coverage of about 0.50 ML of Au onset of an (√3 × √3)R 30 ° reconstruction was visible.
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