Dresden 2020 – wissenschaftliches Programm

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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 Wellm1,2, Vladislav Kataev1, Bernd Büchner1,2, Weiliang Yao3, and Yuan Li3,41Leibniz 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

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