DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

TT: Fachverband Tiefe Temperaturen

TT 72: Poster Session: Correlated Electrons

TT 72.32: Poster

Wednesday, March 14, 2018, 15:00–19:00, Poster B

Variational Cluster Approximation for d4 systems — •Teresa Feldmaier and Maria Daghofer — Institut für funktionelle Materie und Quantentechnologien, Universität Stuttgart, Deutschland

We use the variational cluster approximation to investigate the phase diagram and one-particle spectral density of multi-band Hubbard models with strong spin-orbit coupling. The approach includes quantum fluctuations on a small cluster exactly, where frustration can be treated without additional complications, and long-range order on a mean-field level.
We will in particular investigate systems with four electrons per site, where a local singlet competes with itinerant triplet excitations that can condense into magnetic order. Further, the competition of Hund’s rule and spin-orbit coupling with crystal-field splitting leads to various phases which are realized in some iridium and ruthenium compounds.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2018 > Berlin