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Lateral interactions between particles in an adsorbed overlayer result in their 2D ordering and/or aggregation and also influence other various heterogeneous rate processes. The effect of lateral interactions on diffusion of adsorbed particles has been studied in detail in the situations when the temperature is above the critical one. Here, the author presents Monte Carlo simulations of adsorbate...
Recent high-pressure scanning tunneling microscopy studies, performed at room temperature, have explicitly demonstrated the specifics of the CO-mediated removal of Ni atoms from the topmost layer of an Au/Ni(111) surface alloy. After an incubation period, the reaction is found to start at step edges. On each edge, a large fraction of Ni atoms is removed from the terrace in certain areas, whereas other...
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