The chains of adatoms as a result of oscillatory interactions

The growth of Co on Cu͑111͒ at coverage 0.03 monolayer is studied by kinetic Monte Carlo simulations performed above temperature of dimer formation ͑20-21 K͒ in order to find a nanostructure composed primarily of dimers as an analog of the dilute nanostructure formed of monomers. Both of the nanostructures are stabilized by a long-range surface-state-mediated interaction between adatoms. In order to obtain the largest possible fraction of dimers the simulation procedure consists in deposition of adatoms at low temperature ͑7 K͒ and simulated annealing at higher temperatures. After 60-200 s of annealing at 21-22 K, about 87% of adatoms belongs to dimers. The dimers form dilute islands with a local hexagonal order and an average nearest-neighbor distance of 12.0͑5͒ Å. The nanostructure in the dimer state is stable up to 200 K.

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The chains of adatoms as a result of oscillatory interactions

Cited by 2 publications

References 7 publications

Dilute Cu nanostructure stabilized by substrate-mediated interactions onCu(111): Kinetic Monte Carlo simulations

Dilute Cu nanostructure stabilized by substrate-mediated interactions onCu(111): Kinetic Monte Carlo simulations

Dilute nanostructures built of dimers: Kinetic Monte Carlo study of Co on Cu(111)

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