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SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 46: Frustrated Magnets: Spin Liquids

TT 46.3: Vortrag

Donnerstag, 30. März 2023, 10:00–10:15, HSZ 201

Structural transition in single crystals of Kagome compound Y3Cu9(OH)19Cl8 — •Katharina M. Zoch1, Pascal Puphal2, and Cornelius Krellner11Physikalisches Institut, Goethe-Universität Frankfurt, 60438 Frankfurt am Main, Germany — 2Max-Planck-Institute for Solid State Research, 70569 Stuttgart, Germany

Kagome systems serve as the ideal candidates to obtain an experimental realization of a quantum spin liquid, a class of matter where the spins strongly fluctuate down to lowest temperatures, thus preventing order. Y3Cu9(OH)19Cl8 presents a distorted Kagome lattice with a rich magnetic phase diagram [1]. The improved synthesis of phase-pure single crystals crystals via an external gradient method lead to the evidence of subtle structural instabilities at 33 K and 13 K in thermodynamic measurements while preserving the magnetic model of the system. The compound shows a magnetic phase transition at 2.2 K with persistent spin dynamics below the ordered state in powder samples [2]. We present the single crystal growth as well as thermodynamic and magnetic measurements of this compound.
[1] M. Hering et al., npj Comput. Mater. 8, 10 (2022)
[2] Q. Barthelemy et al., Phys. Rev. Mater. 3, 074401 (2019)

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