Dependence of thermal conductivity on discrete breathers in lattices

G. P. Tsironis, A. R. Bishop, A. V. Savin, A. V. Zolotaryuk

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Abstract

We study the properties of heat conduction in chains of coupled particles subjected 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 temperature, below which the conductivity decreases but while above which it increases.

Original languageEnglish
Pages (from-to)6610-6613
Number of pages4
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume60
Issue number6
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

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ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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