Magnons in antiferromagnets can support both right-handed and left-handed chiralities, which shed a light on the chirality-based spintronics. Here we demonstrate the switching and reading of magnon chirality in an artificial antiferromagnet. The coexisting antiferromagnetic and ferromagnetic characteristic resonance modes are discovered, which permits a high tunability in the modulation of magnon chirality. The reading of the chirality is accomplished via the chirality-dependent spin pumping as well as spin rectification effect. Our result illustrates an ideal antiferromagnetic platform for handling magnon chirality and paves the way for chirality-based spintronics.
@article{arxiv.2103.14483,
title = {Switching magnon chirality in artificial antiferromagnet},
author = {Yahui Liu and Zhengmeng Xu and Lin Liu and Kai Zhang and Yang Meng and Yuanwei Sun and Peng Gao and Hong-Wu Zhao and Qian Niu and J. Li},
journal= {arXiv preprint arXiv:2103.14483},
year = {2022}
}