Dependence of thermal conductivity on discrete breathers in lattices

Authors
Tsironis, GP Bishop, AR Savin, AV Zolotaryuk, AV
Citation
Gp. Tsironis et al., Dependence of thermal conductivity on discrete breathers in lattices, PHYS REV E, 60(6), 1999, pp. 6610-6613
Citations number
13
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
60
Issue
6
Year of publication
1999
Part
A
Pages
6610 - 6613
Database
ISI
SICI code
1063-651X(199912)60:6<6610:DOTCOD>2.0.ZU;2-8
Abstract
We study the properties of heat conduction in chains of coupled particles s ubjected to different anharmonic on-site potentials. Particular emphasis is placed on the role of breathers in saturation of the thermal conductivity for chains with hard anharmonicity; When the chain particles are subject to on-site potentials with soft anharmonicity, we find a characteristic tempe rature, below which the conductivity decreases but while above which it inc reases. [S1063-651X(99)05912-7].