A nonlinear magnonic nano-ring resonator

Qi Wang; Abbass Hamadeh; Roman Verba; Vitaliy Lomakin; Morteza Mohseni; Burkard Hillebrands; Andrii V. Chumak; Philipp Pirro

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arXiv · 2007.09205

A nonlinear magnonic nano-ring resonator

Qi Wang·Abbass Hamadeh·Roman Verba·Vitaliy Lomakin·Morteza Mohseni·Burkard Hillebrands·Andrii V. Chumak·Philipp Pirro

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Abstract

The field of magnonics, which aims at using spin waves as carriers in data processing devices, has attracted increasing interest in recent years. We present and study micromagnetically a nonlinear nanoscale magnonic ring resonator device for enabling implementations of magnonic logic gates and neuromorphic magnonic circuits. In the linear regime, this device efficiently suppresses spin-wave transmission using the phenomenon of critical resonant coupling, thus exhibiting the behavior of a notch filter. By increasing the spin-wave input power, the resonance frequency is shifted leading to transmission curves, depending on the frequency, reminiscent of the activation functions of neurons or showing the characteristics of a power limiter. An analytical theory is developed to describe the transmission curve of magnonic ring resonators in the linear and nonlinear regimes and validated by a comprehensive micromagnetic study. The proposed magnonic ring resonator provides a multi-functional nonlinear building block for unconventional magnonic circuits.

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Qi Wang, Abbass Hamadeh, Roman Verba, Vitaliy Lomakin, Morteza Mohseni, Burkard Hillebrands, Andrii V. Chumak, Philipp Pirro. 2020-07-17. A nonlinear magnonic nano-ring resonator. https://arxiv.org/abs/2007.09205

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