Magnetic resonances in EuSn$_2$As$_2$ single crystal

I. A. Golovchanskiy; E. I. Maltsev; I. V. Shchetinin; V. A. Vlasenko; P. S. Dzhumaev; K. Pervakov; O. V. Emelyanova; A. Yu. Tsvetkov; N. N. Abramov; V. M. Pudalov; V. S. Stolyarov

doi:10.1016/j.jmmm.2022.169713

arXiv · 2204.00389

Magnetic resonances in EuSn$_2$As$_2$ single crystal

I. A. Golovchanskiy·E. I. Maltsev·I. V. Shchetinin·V. A. Vlasenko·P. S. Dzhumaev·K. Pervakov·O. V. Emelyanova·A. Yu. Tsvetkov·N. N. Abramov·V. M. Pudalov·V. S. Stolyarov

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Abstract

In this work, we report the broad-band ferromagnetic resonance spectroscopy of EuSn$_2$As$_2$ single crystals at different temperatures in combination with magnetization measurements and structural characterization. We observe conventional collective acoustic resonance mode of the A-type antiferromagnetic spin-flop phase in the Eu sub-lattice, and its transition to the paramagnetic resonance above the ordering temperature. Furthermore, we observe reproducibly additional well-defined spectral line. The origin of the additional line remains unclear. However, its temperature dependence attributes it to magnetism in the Eu sub-lattice.

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I. A. Golovchanskiy, E. I. Maltsev, I. V. Shchetinin, V. A. Vlasenko, P. S. Dzhumaev, K. Pervakov, O. V. Emelyanova, A. Yu. Tsvetkov, N. N. Abramov, V. M. Pudalov, V. S. Stolyarov. 2022-04-01. Magnetic resonances in EuSn$_2$As$_2$ single crystal. https://doi.org/10.1016/j.jmmm.2022.169713

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