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Dresden 2014 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 8: Correlated Electrons: Spin Systems and Itinerant Magnets - Frustrated Magnets I

TT 8.7: Talk

Monday, March 31, 2014, 11:00–11:15, HSZ 304

Spiral order in Li2IrO3 — •Stephan Rachel1, Johannes Reuther2, and Ronny Thomale31Institut für Theoretische Physik, TU Dresden — 2California Institute of Technology — 3Institut für Theoretische Physik, Universität Würzburg

Iridates are amongst the most interesting complex oxide materials. The non-interacting band structure of the honeycomb Iridates has been claimed to feature the quantum spin Hall effect due to large spin orbit coupling. The true materials exhibit considerable Coulomb interactions leading to different types of magnetic order (e.g., zig-zag or spiral order). Here we show how one can obtain such magnetic phases by considering the strong-coupling limit of a topological Hubbard model. In particular, we find an incommensurate phase with spiral order which is consistent with the recent experimental findings for Li2IrO3.

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