Equilibrium Phase Behavior of a Continuous-Space Microphase Former

Abstract

Periodic microphases universally emerge in systems for which short-range inter-particle attraction is frustrated by long-range repulsion. The morphological richness of these phases makes them desirable material targets, but our relatively coarse understanding of even simple models limits our grasp of their assembly. We report here the solution of the equilibrium phase behavior of a microscopic microphase former through specialized Monte Carlo simulations. The results for the ordered regime qualitatively agree with a Landau-type free energy description and highlight the nontrivial dynamical interplay between micelle, gel and microphase formation.

13 pages, 8 figures

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• Numerical transfer matrix study of frustrated next-nearest-neighbor Ising models on square lattices