Thermal conductivity of quasi-one-dimensional antiferromagnetic spin-chain materials

A. V. Rozhkov, A. L. Chernyshev

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43 Citations (Scopus)

Abstract

We study heat transport in quasi-one-dimensional spin-chain systems by considering the model of one-dimensional bosonic spin excitations interacting with three-dimensional phonons and impurities in the limit of weak spin-lattice coupling and fast spin excitations. A combined effect of the phonon and impurity scatterings yields the following spin-boson thermal conductivity behavior: κS α T2 at low, κS α T-1 at intermediate, and κS = const at higher temperatures. Our results agree well with the existing experimental data for Sr2CuO3. We predict an unusual dependence on the impurity concentration for a number of observables and propose further experiments.

Original languageEnglish
Article number087201
JournalPhysical Review Letters
Volume94
Issue number8
DOIs
Publication statusPublished - 4 Mar 2005
Externally publishedYes

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