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Publication Detail / Abstract

L V Pourovskii, J Mravlje, A Georges, S I Simak and I A Abrikosov

Electron–electron scattering and thermal conductivity of ε-iron at Earth's core conditions

published on New Journal of Physics on July 21, 2017
> Full text via publisher
The electronic state and transport properties of hot dense iron are of the utmost importance for the understanding of Earth's interior. Combining state-of-the-art density functional and dynamical mean field theories we study the impact of electron correlations on the electrical and thermal resistivity of hexagonal close-packed epsilon-Fe at Earth's core conditions and show that the electron–electron scattering in epsilon-Fe exhibit a nearly perfect Fermi-liquid (FL) behavior. Accordingly, the quadratic dependence of the scattering rate, typical of FLs, leads to a modification of the Wiedemann–Franz law and suppresses the thermal conductivity with respect to the electrical one. The consequence is a significant increase of the electron–electron thermal resistivity, which is found to be of comparable magnitude to the electron–phonon one
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