Effects of electron correlations on transport properties of iron at Earth’s core conditions

Peng Zhang, R. E. Cohen () and K. Haule
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Peng Zhang: Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington DC 20015, USA
R. E. Cohen: Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington DC 20015, USA
K. Haule: Rutgers University

Nature, 2015, vol. 517, issue 7536, 605-607

Abstract: Based on first-principles resistivity calculations, it was recently concluded that the thermal conductivity of iron in Earth’s core was too high to sustain thermal convection, thus invalidating such geodynamo models; new calculations including electron correlations find that electron–electron scattering is comparable to the electron–phonon scattering at high temperatures in iron, doubling the expected resistivity, and reviving conventional geodynamo models.

Date: 2015
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DOI: 10.1038/nature14090

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