Anisotropic in-plane resistivity in the nematic phase of the iron pnictides

Rafael M. Fernandes, Elihu Abrahams, Jörg Schmalian

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97 Scopus citations


We show that the interference between scattering by impurities and by critical spin fluctuations gives rise to anisotropic transport in the Ising-nematic state of the iron pnictides. The effect is closely related to the non-Fermi-liquid behavior of the resistivity near an antiferromagnetic quantum critical point. Our theory not only explains the observed sign of the resistivity anisotropy Δρ in electron-doped systems but also predicts a sign change of Δρ upon sufficient hole doping. Furthermore, our model naturally addresses the changes in Δρ upon sample annealing and alkaline-earth substitution.

Original languageEnglish (US)
Article number217002
JournalPhysical review letters
Issue number21
StatePublished - Nov 14 2011

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