Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 72: Correlated Magnetism – Spin Liquids I

TT 72.3: Vortrag

Donnerstag, 12. März 2026, 10:00–10:15, HSZ/0105

Spin-liquid-like ground states in the double hydroxyperovskites CuSn(OD)₆ and MnSn(OD)₆ evidenced by µSR spectroscopy — •moumita naskar¹, anton a. kulbakov¹, kaushick k. parui¹, jonas a. krieger², ellen häußler³, thomas doert³, darren c. peets¹, hans henning klauss¹, dmytro s. inosov^1,4, and rajib sarkar¹ — ¹Institut für Festkörper und Materialphysik, Technische Universität Dresden, 01062 Dresden, Germany — ²Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland — ³Fakultät für Chemie und Lebensmittelchemie, Technische Universität Dresden, 01062 Dresden, Germany — ⁴Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter - ct.qmat, Technische Universität Dresden, 01062 Dresden, Germany

Muon spin rotation measurements were carried out on the hydroxy perovskites CuSn(OD)₆ and MnSn(OD)₆ over the temperature range 0.053-50 K. The absence of long range magnetic order is confirmed down to 0.053 K. The temperature dependence of the muon relaxation rates show an increase with decreasing temperature, indicating that spin fluctuations remain present down to 0.053 K in both the compounds. Spin correlations results from both samples indicate homogeneous spin dynamics. These observations suggest that both compounds possess a fluctuating ground state consistent with a spin-liquid phase.

Keywords: Hydroxy perovskites; MuSR