{ "id": "cond-mat/0112238", "version": "v1", "published": "2001-12-13T01:58:41.000Z", "updated": "2001-12-13T01:58:41.000Z", "title": "Lattice Models of Ionic Systems", "authors": [ "Vladimir Kobelev", "Anatoly B. Kolomeisky", "Michael E. Fisher" ], "comment": "25 pages, 3 figures, ReVTeX 4, Submitted to J. Chem. Phys", "doi": "10.1063/1.1464827", "categories": [ "cond-mat.stat-mech" ], "abstract": "A theoretical analysis of Coulomb systems on lattices in general dimensions is presented. The thermodynamics is developed using Debye-Huckel theory with ion-pairing and dipole-ion solvation, specific calculations being performed for 3D lattices. As for continuum electrolytes, low-density results for sc, bcc and fcc lattices indicate the existence of gas-liquid phase separation. The predicted critical densities have values comparable to those of continuum ionic systems, while the critical temperatures are 60-70% higher. However, when the possibility of sublattice ordering as well as Debye screening is taken into account systematically, order-disorder transitions and a tricritical point are found on sc and bcc lattices, and gas-liquid coexistence is suppressed. Our results agree with recent Monte Carlo simulations of lattice electrolytes.", "revisions": [ { "version": "v1", "updated": "2001-12-13T01:58:41.000Z" } ], "analyses": { "keywords": [ "lattice models", "monte carlo simulations", "continuum ionic systems", "gas-liquid phase separation", "coulomb systems" ], "tags": [ "journal article" ], "note": { "typesetting": "RevTeX", "pages": 25, "language": "en", "license": "arXiv", "status": "editable" } } }