Clustering, conductor-insulator transition and phase separation of an ultrasoft model of electrolytes

Details Clustering, conductor-insulator transition and phase separation of an ultrasoft model of electrolytes Clustering, conductor-insulator transition and phase separation of an ultrasoft model of electrolytes

2011-01-12

arxiv.org/abs/1101.2400v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 5 figures

Scientific paper

We investigate the clustering and phase separation of a model of ultrasoft, oppositely charged macroions by a combination of Monte Carlo and Molecular Dynamics simulations. Static and dynamic diagnostics, including the dielectric permittivity and the electric conductivity of the model, show that ion pairing induces a sharp conductor-insulator transition at low temperatures and densities, which impacts the separation into dilute and concentrated phases below a critical temperature. Preliminary evidence is presented for a possible tricritical nature of the phase diagram of the model.

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