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TT: Fachverband Tiefe Temperaturen

TT 54: Correlated Electrons: Complex Oxides and Other Materials

TT 54.10: Vortrag

Donnerstag, 4. April 2019, 12:00–12:15, H22

Propagation of a single hole in Ca₂RuO₄ — •Adam Kłosiński¹, Jeroen van den Brink², Dmitri V. Efremov², and Krzysztof Wohlfeld¹ — ¹Faculty of Physics, University of Warsaw, Warsaw, Poland — ²Institute for Theoretical Solid State Physics, IFW Dresden, Dresden, Germany

In recent years there has been a growing interest in the understanding of the correlated physics of Ca₂RuO₄, fuelled by the fundamental importance of the spin-orbit interaction in this compound on the one hand and by its close resemblance to the well-studied copper oxides on the other. In order to understand the latter, we focus here on the propagation of a single hole introduced into the Mott insulating ground state of Ca₂RuO₄ and verify its quantitative as well as qualitative differences w.r.t. the cuprates. To this end we introduce an effective multiorbital t-J-like model which we then solve using the linear spin wave theory and self-consistent Born approximation. We obtain the spectral function for fermionic spinless holes whose most striking feauture is its quasi-1D character.