Strain-Tuned Multi-Channel Coupler Based on the Lateral Structure

We observe strain-induced spin-wave routing in the bilateral composite multilayer. By means of Brillouin light scattering, we study the spin-wave transport across three adjacent magnonic stripes, which are strain coupled to a piezoelectric layer. The strain may effectively induce voltage-controlled dipolar spin-wave interactions. We experimentally demonstrate the basic features of the voltage-controlled spin-wave switching. We show that the spin-wave characteristics can be tuned with an electrical field due to piezoelectricity and magnetostriction of the piezolayer and layered composite and mechanical coupling between them.