title: Dependence of thermal conductivity on discrete breathers in lattices.
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.
authors.affiliation: Theory Division and Center for Nonlinear Studies, MS-B258, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: G P
authors.initials: GP
authors.lastname: Tsironis
authors.forename: A R
authors.initials: AR
authors.lastname: Bishop
authors.forename: A V
authors.initials: AV
authors.lastname: Savin
authors.forename: A V
authors.initials: AV
authors.lastname: Zolotaryuk