SKM 2021 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 18: Frustrated Magnets

TT 18.2: Talk

Thursday, September 30, 2021, 10:15–10:30, H7

Coexistence of static and dynamic spins in the new Kitaev iridate β-ZnIrO₃ — •Aleksandr Zubtsovskii and Alexander A. Tsirlin — EP VI, EKM, University of Augsburg, Germany

The three-dimensional Kitaev iridate β-Li₂IrO₃ shows complex magnetic behavior caused by the exchange anisotropy and frustration, and serves as a suitable ground to seek new materials with spin-liquid physics. Here, we report the detailed study of magnetic properties in the new Kitaev compound, β-ZnIrO₃, prepared by the low-temperature topotactic ion exchange reaction. The crystal structure characterized by x-ray and neutron diffraction as well as high-resolution electron microscopy exhibits symmetry lowering with respect to the parent β-Li₂IrO₃, but no structural disorder. Magnetic behavior is studied using magnetization and heat capacity measurements as well as µSR. The results indicate spin freezing below T_f∼5 K and a broad fluctuating regime that extends up to 40 K.