Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 18: Superconductivity: Poster
TT 18.9: Poster
Montag, 18. März 2024, 15:00–18:00, Poster C
Revisiting spin-orbit coupling and correlations in Sr2RuO4 by QSGW — •Weiyi Guo1, Christoph Friedrich2, and Irene Aguilera1 — 1Institute of Physics, University of Amsterdam, 1090 GL, Amsterdam, The Netherlands — 2Peter Grünberg Institute (PGI-1) and Institute for Advanced Simulation (IAS-1), Forschungszentrum Jülich and JARA, 52425 Jülich, Germany
The superconductor Sr2RuO4 exhibits strong spin-orbit coupling (SOC). Extensive theoretical and experimental studies make Sr2RuO4 a good testbed for ab-initio many-body methods for the simulation of the electronic structure. We demonstrate the Fermi surface and quasiparticle band topology from QSGW+SOC, how it improves the DFT+SOC results, and the general agreement between simulation and experiments. We also discuss a possible application of GW+(E)DMFT to the system.
Keywords: Ruthenates; GW; DMFT; Superconductivity; DFT