Nematic spectral signatures of the Hund's metal

Abstract

We show, by means of dynamical mean-field theory calculations, that the experimental fingerprints of the nematic order in iron-based superconductors are intrinsically connected with the electronic correlations in the Hund's correlated metallic state and they can not be accessed via a renormalized quasiparticle picture. In particular, our results show that: (i) in a metal in which correlations are dominated by the Hund's coupling the nematic ordering does not produce a rigid energy shift in the photoemission spectra, but a much richer spectral weight redistribution which mirrors the experimental results; (ii) the nematic ordering is characterized by an orbital-selective coherence induced by the Hund's physics in agreement with the experimental picture.

Important revisions, new content added. Final version as published

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Cited by in corpus (4)

• Uniaxial stress effect on the electronic structure of quantum materials
• Intertwined superconductivity and orbital selectivity in a three-orbital Hubbard model for the iron pnictides
• Finite-momentum and field-induced pairings in orbital-singlet spin-triplet superconductors
• Energy-Resolved Real-Space Imaging of Orbital Nematicity in an Fe-Based Superconductor