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Magnetic resonances in EuSn2As2 single crystal
Journal of Magnetism and Magnetic Materials. 2022. Vol. 562. No. 11. Article 169713.
Golovchanskiy I. A., E.I. Maltsev, Shchetinin I. V., Vlasenko V. A., Dzhumaev P. S., Pervakov K. S., Emelyanova O. V., Tsvetkov A. Y., Abramov N. N., V.M. Pudalov, Stolyarov V. S.
In this work, we report the broad-band ferromagnetic resonance spectroscopy of EuSn2As2 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 canted state 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 associates it with the magnetism in the Eu sub-lattice.
Keywords: antiferromagnetsMagnetic topological insulatorМагнитный топологический изоляторАнтиферромагнетики
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