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TT: Fachverband Tiefe Temperaturen

TT 17: Poster Session Correlated Electrons 1

TT 17.15: Poster

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

Spin dynamics in the quasi-2D Honeycomb material Na₂Co₂TeO₆ probed by Electron Spin Resonance — •Christoph Wellm^1,2, Vladislav Kataev¹, Bernd Büchner^1,2, Weiliang Yao³, and Yuan Li^3,4 — ¹Leibniz Institute for Solid State and Materials Research IFW Dresden, D-01069 — ²Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01062 — ³International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China — ⁴Collaborative Innovation Center of Quantum Matter, Beijing 100871, China

We report an electron spin resonance (ESR) study on single crystals of Na₂Co₂TeO₆, a layered honeycomb material providing a possible realization of Kitaev physics [1]. Similar to previously conducted magnetization measurements [1], ESR data reveals magnetic anisotropy and interesting, complex angular and temperature dependent behavior. In addition, low-energy magnetic excitations can be examined. Our results contribute to a thorough understanding of the magnetic properties and spin correlations in the title compound.

[1] W. Yao and Y. Li, Proc. Natl. Acad. Sci., arXiv:1908.09427