Monomer Adsorption on Equilateral Triangular Lattices with Attractive First-neighbor Interactions.

We have recently studied a model of monomer adsorption on infinitely long equilateral triangular lattices with terraces of finite width M and nonperiodic boundaries. This study was restricted to the case of repulsive adsorbateadsorbate first-neighbor interactions but included attractive, repulsive, and negligible second-neighbor interactions. The present work extends this study to the case of attractive first-neighbors, and the phases are determined, as before, with a confidence exceeding 10 significant figures. Phase diagrams are included for terrace widths M e11. Most of the occupational characteristics of the phases fit exact analytic expressions inM. The infinite-Mlimit of these expressions, combined with other analyses, provide the complete phase diagram for the infinite two-dimensional lattice. In addition to the empty and full coverage phases, there are three phases exhibiting stripe and cluster features that were not observed in the case of repulsive first-neighbors.

Main Author: Phares, Alain J.
Other Authors: Grumbine Jr, David W., Wunderlich, Francis J.
Language: English
Published: 2008
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