Abstract
Structure and electron-adsorptive properties of Gd films adsorbed on Mo(112) surface have been investigated using LEED and CPD techniques. For the coverage range 0< θ<0.6ML (monolayer) the Gd deposit does not reveal an ordered structure. At θ > 0.6 the structures of type c(2 × 1 θ ) occur jointly with the type p(1 × 1 θ ) (at a very small region of θ〉 and show features of one-dimensional compression of the adlayers with increasing coverage. During the process of further Gd deposition the adsorbed layer undergoes one-dimensional compression in the 〈111〉 direction and incommensurate structures (1 × 4) and (1 × 5) are formed. The one-dimensional compression vanishes at θ = 1.25. With increasing θ, the work function change and binding energy are correlated with the phase transition in the adlayer structure. The peculiarities of indirect interaction between adsorbed Gd atoms have been revealed at low coverage.
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