Аннотация:We have studied the effect of chirality of the magnetization precession on the emission and scattering of spin waves from interfaces betweenferromagnets with antiparallel magnetization. The need to match the chirality of the magnetization precessions at such interfaces promotescoupling between propagating modes on one side of the interface and evanescent modes on the other. This leads to the following two majoreffects: (i) an asymmetrical (ultimately, unidirectional) emission of spin waves from such interfaces when they are driven by an ellipticallypolarized magnetic field, and (ii) a strong (ultimately, complete) suppression of the transmission of spin waves incident upon suchinterfaces. Our results are relevant to the construction of spin-wave devices and more generally to the interpretation of measurements andnumerical simulations in the field of chiral magnonics.
