Finite thermal conductivity in 1D lattices

Giardinà, C., Livi, R., Politi, A. and Vassalli, M. (2000) Finite thermal conductivity in 1D lattices. Physical Review Letters, 84(10), 2144. (doi: 10.1103/PhysRevLett.84.2144)

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We discuss the thermal conductivity of a chain of coupled rotators, showing that it is the first example of a 1D nonlinear lattice exhibiting normal transport properties in the absence of an on-site potential. Numerical estimates obtained by simulating a chain in contact with two thermal baths at different temperatures are found to be consistent with those based on linear response theory. The dynamics of the Fourier modes provides direct evidence of energy diffusion. The finiteness of the conductivity is traced back to the occurrence of phase jumps. Our conclusions are confirmed by the analysis of two variants of this model.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Vassalli, Dr Massimo
Authors: Giardinà, C., Livi, R., Politi, A., and Vassalli, M.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN (Online):1079-7114

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