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

Nematic spectral signatures of the Hund's metal / Fanfarillo, Laura; Valli, Angelo; Capone, Massimo. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 107:8(2023), pp. 1-5. [10.1103/PhysRevB.107.L081114]

Nematic spectral signatures of the Hund's metal

Fanfarillo, Laura;Valli, Angelo;Capone, Massimo
2023-01-01

Abstract

We show, by means of dynamical mean-field theory calculations, that the experimental fingerprints of thenematic order in iron-based superconductors are intrinsically connected with the electronic correlations inthe Hund's correlated metallic state and they cannot be accessed via a renormalized quasiparticle picture. Inparticular, our results show that (i) in a metal in which correlations are dominated by the Hund's coupling thenematic ordering does not produce a rigid energy shift in the photoemission spectra, but a much richer spectralweight redistribution which mirrors the experimental results, and (ii) the nematic ordering is characterized by anorbital-selective coherence induced by the Hund's physics in agreement with the experimental picture
2023
107
8
1
5
L081114
https://arxiv.org/abs/2203.01273
Fanfarillo, Laura; Valli, Angelo; Capone, Massimo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/137493
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