Density anomaly in core-softened lattice gas

被引：31

作者：

Balladares, AL ^{[1
]}

Barbosa, MC ^{[1
]}

机构：

[1] Univ Fed Rio Grande Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 49期

关键词：

D O I：

10.1088/0953-8984/16/49/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A two dimensional lattice gas model with a 'core-softened' potential is investigated. Two liquid phases and density anomaly are found. The demixing phase transition between the two liquid phases ends at a tricritical point that is also the terminus of a critical line. The density anomaly is shown to be related to this continuous line.

引用

页码：8811 / 8822

页数：12

共 31 条

[1] FINITE-SIZE EFFECTS AT TEMPERATURE-DRIVEN 1ST-ORDER TRANSITIONS [J].

CHALLA, MSS ;

LANDAU, DP ;

BINDER, K .

PHYSICAL REVIEW B, 1986, 34 (03) :1841-1852

[2] MEAN SPHERICAL APPROXIMATION FOR A MODEL LIQUID-METAL POTENTIAL [J].

CUMMINGS, PT ;

STELL, G .

MOLECULAR PHYSICS, 1981, 43 (06) :1267-1291

[3]

Debenedetti P. G., 1996, METASTABLE LIQUIDS C

[4] SPINODAL CURVE OF SOME SUPERCOOLED LIQUIDS [J].

DEBENEDETTI, PG ;

RAGHAVAN, VS ;

BORICK, SS .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (11) :4540-4551

[5]

DEOLIVEIRA AB, 2004, CONDMAT0409138

[6] Generic mechanism for generating a liquid-liquid phase transition [J].

Franzese, G ;

Malescio, G ;

Skibinsky, A ;

Buldyrev, SV ;

Stanley, HE .

NATURE, 2001, 409 (6821) :692-695

[7] Liquid-liquid phase transformation in carbon [J].

Glosli, JN ;

Ree, FH .

PHYSICAL REVIEW LETTERS, 1999, 82 (23) :4659-4662

[8] Liquid-liquid phase transition: Evidence from simulations [J].

Harrington, S ;

Zhang, R ;

Poole, PH ;

Sciortino, F ;

Stanley, HE .

PHYSICAL REVIEW LETTERS, 1997, 78 (12) :2409-2412

[9] FLUIDS WITH SEVERAL PHASE TRANSITIONS [J].

HEMMER, PC ;

STELL, G .

PHYSICAL REVIEW LETTERS, 1970, 24 (23) :1284-&

[10]

HENRIQUES VB, 2004, CONDMAT0407763

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