The nematic order parameter changes sign between the Brillouin zone center and corner in both FeSe and BaFe2As2, with a common momentum dependence.
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Momentum Dependence of the Nematic Order Parameter in Iron-Based Superconductors
The nematic order parameter changes sign between the Brillouin zone center and corner in both FeSe and BaFe2As2, with a common momentum dependence.