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

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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
    University College London, 222 Pearson Building, Gower Street, London WC1E 6BT, UK)

  • K. Haule

    (Rutgers University)

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.

Suggested Citation

  • Peng Zhang & R. E. Cohen & K. Haule, 2015. "Effects of electron correlations on transport properties of iron at Earth’s core conditions," Nature, Nature, vol. 517(7536), pages 605-607, January.
    • Handle: RePEc:nat:nature:v:517:y:2015:i:7536:d:10.1038_nature14090
    DOI: 10.1038/nature14090
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