ENERGY-TRANSPORT IN DISORDERED OSCILLATORY SYSTEMS

被引:17
作者
WAGNER, M [1 ]
ZAVT, G [1 ]
VAZQUEZMARQUEZ, J [1 ]
LUTZE, A [1 ]
MOUGIOS, T [1 ]
VILIANI, G [1 ]
FRIZZERA, W [1 ]
PILLA, O [1 ]
MONTAGNA, M [1 ]
机构
[1] UNIV TRENTO,DIPARTMENTO FIS,I-38050 TRENT,ITALY
来源
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1992年 / 65卷 / 02期
关键词
D O I
10.1080/13642819208217902
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Several unexpected features of energy transport in one-dimensional regular and disturbed systems are presented. In the classical case the propagation strongly depends on the type of initial excitation in both the disturbed and disordered chain. The phenomena of localization and superdiffusion are exemplified. For temperature excitation a local concept of transport description is presented and applied both numerically and analytically. Finally, it is shown that a one-dimensional sequence of softened springs in a two- or three-dimensional lattice generates a dynamical instability of the low-frequency mode density, which has consequences for the thermodynamic and transport behaviour.
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页码:273 / 287
页数:15
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