Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Poster Session: Correlated Electrons 1

TT 19.40: Poster

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

Spin liquids and competing magnetic orders in three-dimensional kagome magnets — •Finn Lasse Buessen and Simon Trebst — University of Cologne, Germany

One of the best experimentally established spin liquids is found in the hyperkagome compound Na4Ir3O8 where geometric frustration is an inherent feature of its three-dimensional lattice structure of corner-sharing triangles. Here we present a detailed numerical analysis of these systems in the presence of competing nearest and next-nearest neighbor interactions using a recently developed pseudo-fermion functional renormalization group (pf-FRG) approach. We discuss why this approach allows to access the strong-coupling regime of quantum spin systems, highlight technical aspects of a state-of-the-art numerical implementation, and demonstrate its applicability for the hyperkagome systems and other three-dimensional frustrated quantum magnets.