Figure 3: Magnetoelectrical control of microwave nonreciprocity.
From: Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet
(a–d) Microwave absorption ΔS12, ΔS21 at 6 K in ±160 mT (+160mT in (a,b) and −160mT in (c,d)). The poling fields were E=±0.5 MV m−1 (+0.5 MVm−1 in (a,c) and −0.5 MVm−1 in (b,d)). Inset illustrates the directional relation of P, M and k for ΔS12 and ΔS21 measurements.
