Switchable giant nonreciprocal frequency shift of propagating spin waves in synthetic antiferromagnets Ishibashi, Mio ; Shiota, Yoichi ; Li, Tian ; Funada, Shinsaku ; Moriyama, Takahiro ; Ono, Teruo Abstract Publication: Science Advances Pub Date: April 2020 DOI: 10.1126/sciadv.aaz6931 Bibcode: 2020SciA....6.6931I