Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 20: Poster Session: Correlated Electrons 2

TT 20.9: Poster

Montag, 20. März 2017, 15:00–19:00, P2-OG1

Susceptibility calculations using a multi-orbital general CT-QMC solver for DMFT — •Julian Mußhoff^1,2, Amin Kiani¹, and Eva Pavarini¹ — ¹Forschungszentrum Juelich GmbH, Institute for Advanced Simulation, 52425 Juelich, Germany — ²Institute for Theory of Statistical Physics RWTH Aachen University, 52074 Aachen, Germany

Susceptibilities describe the response of a system to an external perturbation, and are therefore essential to compare theoretical calculations with experiments. We use a general continuous-time quantum Monte Carlo solver [1] for dynamical mean-field theory to calculate generalized local susceptibilities. Our general solver allows us to study multi-orbital correlated systems of any symmetry. We calculate the lattice susceptibilities using the Bethe-Salpeter equation. On the poster we show magnetic susceptibility results for a representative multi-orbital system, KCuF₃.
[1] A. Flesch, E. Gorelov, E. Koch, E. Pavarini, Phys. Rev. B 87, 195141