Non-local correlations in Iron Pnictides and Chalcogenides

17 Jul 2020 Bhattacharyya Shinibali Björnson Kristofer Zantout Karim Steffensen Daniel Fanfarillo Laura Kreisel Andreas Valentí Roser Andersen Brian M. Hirschfeld P. J.

Deviations of low-energy electronic structure of iron-based superconductors from density functional theory predictions have been parametrized in terms of band- and orbital-dependent mass renormalizations and energy shifts. The former have typically been described in terms of a local self-energy within the framework of dynamical mean field theory, while the latter appears to require non-local effects due to interband scattering... (read more)

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