Abstract
Detailed first-principles calculations have been performed on adsorption of closely spaced rows of Mn atoms on Si(1 0 0) ( 2 × 1 ) . The optimized geometries and adsorption energies have been obtained. For adsorption of a single Mn atom on Si(1 0 0), binding at the subsurface site below the Si surface dimmer is the most stable adsorption site. For two Mn atoms adsorption models, we found that the h and i sites are the energetically most favorable structure. The magnetic moment of b site is 3.642 μ B which is the largest in all possible surface-adatom configurations. We also found that the silicon surface is metallic for the coverages of 0.5 and 1 ML.
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