Two-dimensional symmetrical mixtures in an external field of square symmetry.
Using the Monte Carlo simulation method in the grand canonical ensemble, we study two-dimensional symmetrical binary mixtures subjected to an external potential of square symmetry and finite corrugation. The results reveal a rich variety of mixed liquid-like and solid-like structures. It is demonstrated that even very weakly corrugated external potential leads to the development of axially ordered striped solid-like phases. The results of finite temperature simulation confirm quite well the predictions stemming from the ground state considerations and show the formation of commensurate, high-order commensurate, and incommensurate mixed phases. It is also shown that the corrugation potential affects the demixing transition.
Patrykiejew
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Department for the Modelling of Physico-Chemical Processes, Faculty of Chemistry, MCS University, 20031 Lublin, Poland. andrzej@pluto.umcs.lublin.pl
Sokołowski
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