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arXiv · 2010.11134

Thermal gating of magnon exchange in magnetic multilayers with antiferromagnetic spacers

Dmytro M. Polishchuk·Yuliia O. Tykhonenko-Polishchuk·Olena V. Gomonay·Vladislav Korenivski
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Abstract

We observe a strong thermally-controlled magnon-mediated interlayer coupling of two ferromagnetic layers via an antiferromagnetic spacer in spin-valve type trilayers. The effect manifests itself as a field-induced coherent switching of the two ferromagnets, which can be controlled by varying temperature and the spacer thickness. We explain the observed behavior as due to a strong hybridization of the ferro- and antiferro-magnetic magnon modes in the trilayer at temperatures just below the Néel temperature of the antiferromagnetic spacer.

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Dmytro M. Polishchuk, Yuliia O. Tykhonenko-Polishchuk, Olena V. Gomonay, Vladislav Korenivski. 2020-10-21. Thermal gating of magnon exchange in magnetic multilayers with antiferromagnetic spacers. https://doi.org/10.1103/physrevlett.126.227203

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