Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 17: Poster Session Correlated Electrons 1

TT 17.13: Poster

Montag, 16. März 2020, 15:00–19:00, P2/EG

Heat transport in the Kitaev spin-liquid candidate α-RuCl3 — •Matthias Gillig1, Richard Hentrich1, Xiaochen Hong1, Maria Roslova2, Anna Isaeva1,2, Thomas Doert2, Bernd Büchner1,3, and Christian Hess1,31Leibniz-Institut für Festkörper- und Werkstoffforschung, Dresden, Germany — 2Faculty of Chemistry and Food Chemistry, TU Dresden, Germany — 3Center for Transport and Devices, TU Dresden, Germany

α-RuCl3 is a prime candidate to be close to the realization of the Kitaev model in a real material. The model is of interest due to its exact solution with a spin-liquid ground state and emerging Majorana excitations. Additional Heisenberg and off-diagonal terms in the Hamiltonian of α-RuCl3 distinguish it from a pure Kitaev system which leads to an antiferromagnetically ordered ground state below T = 7 K. By applying a magnetic field above 8 T parallel to the honeycomb plane the ordered phase can be suppressed and a new phase emerges which is predicted to have spin-liquid character. We have performed detailed studies on the longitudinal and transverse heat transport in α-RuCl3 for magnetic fields applied parallel and perpendicular to the honeycomb plane to explore the field-induced phase.

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