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Open AccessArticle

Nonlinear Heat Transport in Superlattices with Mobile Defects

by David Jou 1,*,† and Liliana Restuccia 2
1
Grup de Fisíca Estadística, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
2
Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale F. Stagno d’Alcontres, Salita Sperone 31, 98166 Messina, Italy
*
Author to whom correspondence should be addressed.
Current address: Institut d’Estudis Catalans, Carme 47, 08001 Barcelona, Spain.
Entropy 2019, 21(12), 1200; https://doi.org/10.3390/e21121200
Received: 30 October 2019 / Revised: 25 November 2019 / Accepted: 4 December 2019 / Published: 6 December 2019
(This article belongs to the Special Issue Selected Papers from 15th Joint European Thermodynamics Conference)
We consider heat conduction in a superlattice with mobile defects, which reduce the thermal conductivity of the material. If the defects may be dragged by the heat flux, and if they are stopped at the interfaces of the superlattice, it is seen that the effective thermal resistance of the layers will depend on the heat flux. Thus, the concentration dependence of the transport coefficients plus the mobility of the defects lead to a strongly nonlinear behavior of heat transport, which may be used in some cases as a basis for thermal transistors. View Full-Text
Keywords: heat transport; extended thermodynamics; mobile defects; defect engineering; thermal transistor; superlattices heat transport; extended thermodynamics; mobile defects; defect engineering; thermal transistor; superlattices
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Jou, D.; Restuccia, L. Nonlinear Heat Transport in Superlattices with Mobile Defects. Entropy 2019, 21, 1200.

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