REPULSIVE POTENTIALS, CLUMPS AND THE METASTABLE GLASS PHASE

被引:71
作者
KLEIN, W [1 ]
GOULD, H [1 ]
RAMOS, RA [1 ]
CLEJAN, I [1 ]
MELCUK, AI [1 ]
机构
[1] CLARK UNIV,DEPT PHYS,WORCESTER,MA 01610
来源
PHYSICA A | 1994年 / 205卷 / 04期
基金
美国国家科学基金会;
关键词
D O I
10.1016/0378-4371(94)90233-X
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the results of simulations and theoretical investigations of a system of particles with a weak, long-range repulsive interaction. At fixed density the fluid phase, which is stable at high temperatures, becomes metastable and then unstable as the temperature is lowered. For low temperatures the particles form approximately equal size clumps that interact weakly with neighboring clumps. The global free energy minimum at low temperatures corresponds to a crystalline lattice clump structure. However the free energy surface has many minima associated with metastable amorphous phases. Quenches from the fluid phase to low temperatures almost always will result in an amorphous clump structure with the number of clumps dependent on quench history. The association of the amorphous phase with a large number of metastable minima is similar to a mean-field spin glass.
引用
收藏
页码:738 / 746
页数:9
相关论文
共 13 条
[1]   KIRKWOOD-SALSBURG EQUATIONS FOR A BOUNDED STABLE KAC POTENTIAL .2. INSTABILITY AND PHASE-TRANSITIONS [J].
GREWE, N ;
KLEIN, W .
JOURNAL OF MATHEMATICAL PHYSICS, 1977, 18 (09) :1735-1740
[2]  
Hansen J. P., 1991, LIQUIDS FREEZING GLA
[3]  
HAWARD RN, 1973, PHYSICS GLASSY POLYM
[4]   ON VAN DER WAALS THEORY OF VAPOR-LIQUID EQUILIBRIUM .1. DISCUSSION OF A 1-DIMENSIONAL MODEL [J].
KAC, M ;
HEMMER, PC ;
UHLENBECK, GE .
JOURNAL OF MATHEMATICAL PHYSICS, 1963, 4 (02) :216-&
[5]  
Kawasaki K., 1992, SLOW DYNAMICS CONDEN
[6]   INFINITE-RANGED MODELS OF SPIN-GLASSES [J].
KIRKPATRICK, S ;
SHERRINGTON, D .
PHYSICAL REVIEW B, 1978, 17 (11) :4384-4403
[7]  
KLEIN W, 1987, PHYS REV LETT, V57, P2845
[8]   THEORY OF CONDENSATION POINT [J].
LANGER, JS .
ANNALS OF PHYSICS, 1967, 41 (01) :108-+
[9]  
Oxtoby D. W., 1988, ADV CHEM PHYS, V70, P263
[10]   STUDY OF MELTING AND FREEZING IN GAUSSIAN CORE MODEL BY MOLECULAR-DYNAMICS SIMULATION [J].
STILLINGER, FH ;
WEBER, TA .
JOURNAL OF CHEMICAL PHYSICS, 1978, 68 (08) :3837-3844