We experimentally study the spin-wave coupling in adjacent ferrimagnetic-ferroelectric heterostructures. By using the space-resolved Brillouin light-scattering spectroscopy, we perform a systematic study of the coupling of waves propagating in both a magnetic and a ferroelectric layer. We demonstrate the voltage-controlled transfer of the spin-wave energy between the adjacent bilayers. Our results show, that the coupling efficiency of the proposed laterally coupled multiferroics can be tuned by independent variation of the applied magnetic and electric field, which opens exciting prospects for an emerging field of magnonics.

• Received 23 September 2016

DOI:https://doi.org/10.1103/PhysRevApplied.7.014013