THE PERCOLATING PROPERTIES OF DISSOCIATED MONOMERS IN A DIMER ADSORPTION PROCESS

A model is presented to investigate the process of the dissociative ad sorption of dimers and study the percolating properties of the dissoci ated monomers. There is only one phase, the monomer-nonpercolating pha se, if the dimer concentration phi is low. If phi > phi(c), however, t he system undergoes a continuous transition from the monomer-nonpercol ating phase to the monomer-percolating phase as the dissociation proba bility p increases. The phase diagram is obtained by numerical simulat ion. The universality class of the model is found to be the same as fo r the ordinary percolation model. (C) 1998 Elsevier Science B.V. All r ights reserved.