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 N\'eel temperature of the antiferromagnetic spacer.
@article{arxiv.2010.11134,
title = {Thermal gating of magnon exchange in magnetic multilayers with antiferromagnetic spacers},
author = {Dmytro M. Polishchuk and Yuliia O. Tykhonenko-Polishchuk and Olena V. Gomonay and Vladislav Korenivski},
journal= {arXiv preprint arXiv:2010.11134},
year = {2021}
}