Abstract
A microscopic model for missing-row reconstructions (MRR's), induced by atoms adsorbed in the threefold fcc hollow sites on the (110) surface of fcc metals, is proposed. The adsorbate subsystem is accounted for in the model by including interactions between dipoles, each formed by an adsorbate atom and its neighboring metal atoms. The phase diagram of the model has been calculated employing the Monte Carlo and cluster variation methods. We find overall agreement between our results and the experimental data on MRR's of fcc(110) surfaces.
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