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Spin-waves (magnons) are among the prime candidates for building fast yetenergy-efficient platforms for information transport and computing. We heredemonstrate theoretically and in state-of-the-art micromagnetic simulation theeffects that strategically-injected spin-polarized current can have oncontrolling magnonic transport. We reveal analytically that the Zhang-Lispin-transfer-torque induced by applied current is analogous to theDzyaloshinskii-Moriya interaction for scattering the magnons in the linearregime, to then provide a generalized Snell's law that describes the spin-wavepropagation across regions with different current densities. We validate thelatter in numerical simulations of realistic systems, and exemplify how thesefindings may help advance the design of spin-wave logic and neuromorphiccomputing devices.

Towards Magnonic Logic and Neuromorphic Computing: Controlling Spin-Waves by Spin-Polarized Current