title: Heat superdiffusion in plasmonic nanostructure networks.
abstract: The heat transport mediated by near-field interactions in networks of plasmonic nanostructures is shown to be analogous to a generalized random walk process. The existence of superdiffusive regimes is demonstrated both in linear ordered chains and in three-dimensional random networks by analyzing the asymptotic behavior of the corresponding probability distribution function. We show that the spread of heat in these networks is described by a type of Lévy flight. The presence of such anomalous heat-transport regimes in plasmonic networks opens the way to the design of a new generation of composite materials able to transport heat faster than the normal diffusion process in solids.
authors.affiliation: Laboratoire Charles Fabry, UMR 8501, Institut d'Optique, CNRS, Université Paris-Sud 11, 2, Avenue Augustin Fresnel, 91127 Palaiseau Cedex, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Ben-Abdallah
authors.forename: Riccardo
authors.initials: R
authors.lastname: Messina
authors.forename: Svend-Age
authors.initials: SA
authors.lastname: Biehs
authors.forename: Maria
authors.initials: M
authors.lastname: Tschikin
authors.forename: Karl
authors.initials: K
authors.lastname: Joulain
authors.forename: Carsten
authors.initials: C
authors.lastname: Henkel