Universality of ionic criticality: Size- and charge-asymmetric electrolytes

Young C. Kim, Michael E. Fisher, Athanassios Z. Panagiotopoulos

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Grand-canonical simulations designed to resolve critical universality classes are reported for z1 hard-core electrolyte models with diameter ratios λ=a+/a-6. For z=1 Ising-type behavior prevails. Unbiased estimates of Tc(λ) are within 1% of previous (biased) estimates but the critical densities are ∼5% lower. Ising character is also established for the 21 and 31 equisized models, along with critical amplitudes and improved Tc estimates. For z=3, however, strong finite-size effects reduce the confidence level although classical and O(n3) criticality are excluded.

Original languageAmerican English
Article number195703
JournalPhysical review letters
Issue number19
StatePublished - Nov 4 2005

ASJC Scopus subject areas

  • General Physics and Astronomy


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