Phonon and electron temperature and non-Fourier heat transport in thin layers

We present a thermodynamic model of heat conductor which allows for different temperatures of phonons and electrons. This model is applied to calculate the steady-state radial temperature profile in a circular thin layer. The compatibility of the obtained temperature profiles with the second law of...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2017-04, Vol.511, p.61-67
Main Authors: Carlomagno, I., Cimmelli, V.A., Sellitto, A.
Format: Article
Language:English
Subjects:
Conductors
Constitutive equations
Constitutive relationships
Electron energy
Electrons
Entropy
Entropy flux
Heat conduction with phonons and electrons
Heat conductivity
Local entropy production
Phonons
Studies
Temperature profiles
Thermodynamics
Thin films
Two-temperature mixture of phonons and electrons
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Summary:We present a thermodynamic model of heat conductor which allows for different temperatures of phonons and electrons. This model is applied to calculate the steady-state radial temperature profile in a circular thin layer. The compatibility of the obtained temperature profiles with the second law of thermodynamics is investigated in view of the requirement of positive entropy production and of a nonlocal constitutive equation for the entropy flux.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2017.01.023