Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 78: Correlated Electrons: Poster Session
TT 78.37: Poster
Donnerstag, 10. März 2016, 15:00–18:30, Poster D
Magnetic Excitations of Spin-Orbit and Hund’s Rule Coupled Mott Insulators — •Michael Schmid and Maria Daghofer — FMQ Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart
When both, Hund’s-rule and spin-orbit coupling are strong, the local ground state of two electrons in d4 iridates is a singlet. However, the triplet states are not very high in energy and kinetic-energy-driven interactions between ions can mix some triplet character into the overall ground state. We are here interested in mangetic excitaions of such compounds and complement an analytic approach based on the similarity to dimers with a numerical investigation. We make here use of a recently extension of a dynamical density-matrix embedding scheme to exciations.