Structure and structure relaxation

被引：33

作者：

Franosch, T ^{[1
]}

Gotze, W ^{[1
]}

Mayr, MR ^{[1
]}

Singh, AP ^{[1
]}

机构：

[1] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 235卷

关键词：

D O I：

10.1016/S0022-3093(98)00500-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A discrete-dynamics model, which is specified solely in terms of a system's equilibrium structure, is defined for the density correlators of a simple fluid. This model yields results for the evolution of glassy dynamics which are identical with the ones obtained from the mode-coupling theory for ideal liquid-glass transitions. The decay of density fluctuations outside the transient regime is shown to be given by a superposition of Debye processes. The concept of structural relaxation is given a precise meaning. It is proven that the long-time part of the mode-coupling theory solutions is structural relaxation, while the transient motion merely determines an overall time scale for the glassy dynamics. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：71 / 85

页数：15

共 23 条

[1]

Balucani U., 1994, DYNAMICS LIQUID STAT

[2] DYNAMICS OF SUPERCOOLED LIQUIDS AND THE GLASS-TRANSITION [J].

BENGTZELIUS, U ;

GOTZE, W ;

SJOLANDER, A .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (33) :5915-5934

[3] LIGHT-SCATTERING SPECTROSCOPY OF THE LIQUID-GLASS TRANSITION IN CAKNO3 AND IN THE MOLECULAR GLASS SALOL - EXTENDED-MODE-COUPLING-THEORY ANALYSIS [J].

CUMMINS, HZ ;

DU, WM ;

FUCHS, M ;

GOTZE, W ;

HILDEBRAND, S ;

LATZ, A ;

LI, G ;

TAO, NJ .

PHYSICAL REVIEW E, 1993, 47 (06) :4223-4239

[4]

CUMMINS HZ, 1997, PROG THEOR PHYS, V126, P2

[5]

Feller W., 1991, An Introduction to Probability Theory and Its Applications, VII

[6] Evolution of structural relaxation spectra of glycerol within the gigahertz band [J].

Franosch, T ;

Gotze, W ;

Mayr, MR ;

Singh, AP .

PHYSICAL REVIEW E, 1997, 55 (03) :3183-3190

[7] Asymptotic laws and preasymptotic correction formulas for the relaxation near glass-transition singularities [J].

Franosch, T ;

Fuchs, M ;

Gotze, W ;

Mayr, MR ;

Singh, AP .

PHYSICAL REVIEW E, 1997, 55 (06) :7153-7176

[8] THE SCALING FUNCTIONS FOR THE BETA-RELAXATION PROCESS OF SUPERCOOLED LIQUIDS AND GLASSES [J].

GOTZE, W .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (42) :8485-8498

[9] Comments on the mode coupling theory for structural relaxation [J].

Gotze, W ;

Sjogren, L .

CHEMICAL PHYSICS, 1996, 212 (01) :47-59

[10] SOME ASPECTS OF PHASE-TRANSITIONS DESCRIBED BY THE SELF-CONSISTENT CURRENT RELAXATION THEORY [J].

GOTZE, W .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1984, 56 (02) :139-154

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