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arXiv · 2301.04922

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

Raí M. Menezes·Jeroen Mulkers·Clécio C. de Souza Silva·Bartel Van Waeyenberge·Milorad V. Milošević
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Abstract

Spin-waves (magnons) are among the prime candidates for building fast yet energy-efficient platforms for information transport and computing. We here demonstrate theoretically and in state-of-the-art micromagnetic simulation the effects that strategically-injected spin-polarized current can have on controlling magnonic transport. We reveal analytically that the Zhang-Li spin-transfer-torque induced by applied current is analogous to the Dzyaloshinskii-Moriya interaction for scattering the magnons in the linear regime, to then provide a generalized Snell's law that describes the spin-wave propagation across regions with different current densities. We validate the latter in numerical simulations of realistic systems, and exemplify how these findings may help advance the design of spin-wave logic and neuromorphic computing devices.

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Raí M. Menezes, Jeroen Mulkers, Clécio C. de Souza Silva, Bartel Van Waeyenberge, Milorad V. Milošević. 2023-01-12. Towards Magnonic Logic and Neuromorphic Computing: Controlling Spin-Waves by Spin-Polarized Current. https://arxiv.org/abs/2301.04922

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