Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 5: Superconductivity: Fe-based Superconductors - FeSe and 122

TT 5.6: Vortrag

Montag, 1. April 2019, 10:45–11:00, H23

Non-local Correlations in FeSe within the Two-Particle Self-Consistent approach — •Karim Zantout¹, Steffen Backes², and Roser Valentí¹ — ¹Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany — ²CPHT, Ecole Polytechnique, 91128 Palaiseau cedex, France

In this talk we will present results on non-local correlations in FeSe obtained with the non-perturbative Two-Particle Self-Consistent approach that provides a frequency- and momentum-dependent Self energy. We will compare our calculations to results obtained by local approximation techniques as DMFT and discuss their relevance to experimental observations such as ARPES experiments.