SPATIOTEMPORAL EVOLUTION OF LOCAL TEMPERATURE EXCITATIONS IN DISORDERED HARMONIC-SYSTEMS

被引：4
|
作者：
WAGNER, M [1 ]
LUTZE, A [1 ]
VILIANI, G [1 ]
FRIZZERA, W [1 ]
PILLA, O [1 ]
机构：
[1] UNIV TRENT,DIPARTIMENTO FIS,I-38050 TRENT,ITALY
来源：
PHYSICA B | 1993年 / 190卷 / 2-3期
关键词：
D O I：
10.1016/0921-4526(93)90477-N
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In strongly disordered condensed systems the Peierls-Boltzmann type of energy transport theory is not applicable. We present an alternative approach based on a local temperature excitation. The formalism is exemplified analytically and numerically for the Hamiltonian chain and for a chain with a random array of disturbed springs. Unexpected features are found, e.g. superdiffusion. Localization is verified also.
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页码：285 / 306
页数：22
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