Ionic criticality: An exactly soluble model

被引：21

作者：

Aqua, JN ^{[1
]}

Fisher, ME ^{[1
]}

机构：

[1] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 13期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.135702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Gas-liquid criticality in ionic fluids is studied in exactly soluble spherical models that use interlaced sublattices to represent hard-core multicomponent systems. Short-range attractions in the uncharged fluid drive criticality, but charged ions do not alter the universality class. Debye screening remains exponential at criticality in fully ion-symmetric 1:1 models. However, ionic asymmetry couples charge and density fluctuations in a direct manner: The charge correlation length then diverges precisely as the density correlation length and the Stillinger-Lovett rule is violated at criticality.

引用

页码：135702 / 1

页数：4

共 22 条

[1]

AQUA JN, IN PRESS

[2] PHASE BOUNDARIES NEAR CRITICAL END-POINTS .2. GENERAL SPHERICAL-MODELS [J].

BARBOSA, MC ;

FISHER, ME .

PHYSICAL REVIEW B, 1991, 43 (13) :10635-10646

[3] Fluctuations in electrolytes: The Lebowitz and other correlation lengths [J].

Bekiranov, S ;

Fisher, ME .

PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5836-5839

[4] DEBYE-SCREENING [J].

BRYDGES, DC ;

FEDERBUSH, P .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1980, 73 (03) :197-246

[5] ON THE TWO-DIMENSIONAL COULOMB GAS [J].

CORNU, F ;

JANCOVICI, B .

JOURNAL OF STATISTICAL PHYSICS, 1987, 49 (1-2) :33-56

[6] THEORY OF CRITICAL-POINT SCATTERING AND CORRELATIONS .I. ISING MODEL [J].

FISHER, ME ;

BURFORD, FJ .

PHYSICAL REVIEW, 1967, 156 (02) :583-&

[7] THE STORY OF COULOMBIC CRITICALITY [J].

FISHER, ME .

JOURNAL OF STATISTICAL PHYSICS, 1994, 75 (1-2) :1-36

[8] CRITICAL ISOTHERM OF A LATTICE PLASMA [J].

GAUDIN, M .

JOURNAL DE PHYSIQUE, 1985, 46 (07) :1027-1042

[9]

Joyce G.S., 1972, PHASE TRANSITIONS CR, V2, P375

[10] Precise simulation of near-critical fluid coexistence [J].

Kim, YC ;

Fisher, ME ;

Luijten, E .

PHYSICAL REVIEW LETTERS, 2003, 91 (06)

← 1 2 3 →