Inelastic Spin-Wave Beam Scattering by Edge-Localized Spin Waves in a Ferromagnetic Thin Film

Spin waves are promising chargeless information carriers for the future, energetically efficient beyond CMOS systems. Among many advantages ease of achieving nonlinearity, variety possible interactions, and excitation types. Although rapidly developing magnonic research has already yielded impressive realizations, multimode nonlinear effects, particularly with propagating their nanoscale still an open problem. We theoretically study dynamic interactions spin confined to edge a thin ferromagnetic film spin-wave beam incident at this edge. find inelastically scattered beams frequencies increased decreased by frequency relative specularly reflected beam. observe strong dependence angular shift inelastic on edge-mode frequency, which allows us propose demultiplexing signal encoded in along Since magnetostatic ubiquitous dynamics, decisive process, indicates possibility implementing presented effects other configurations use