Stimulated Magnonic Frequency Combs

TL;DR

This paper introduces a new method for generating magnonic frequency combs that overcomes previous experimental challenges, enabling precise control and practical integration in spintronic devices through combined theoretical, simulation, and experimental work.

Contribution

A novel stimulated mechanism for magnonic frequency comb generation that improves efficiency and control, advancing the field beyond traditional three-magnon scattering methods.

Findings

Demonstrated the feasibility of the new mechanism through experiments

Achieved precise control over comb spectral line spacing and number

Validated the approach with theoretical and micromagnetic simulations

Abstract

Magnonic frequency combs, characterized by a series of discrete frequency lines, have emerged as a promising frontier in magnon spintronics, with potential applications in advanced information processing and sensing technologies. Although the three-magnon scattering process is widely recognized as a fundamental mechanism for generating these combs, its experimental realization has remained challenging due to the high threshold power and strict conservation of momentum and energy. In this work, we propose a novel mechanism for the stimulated generation of magnonic frequency combs that overcomes these limitations. Our approach offers precise and efficient control over key comb properties, including spacing between spectral lines and the number of lines, marking a significant advancement in the field. We substantiate this mechanism through a robust combination of theoretical modeling, micromagnetic simulations, and experimental validation. This study not only demonstrates the feasibility of our method but also opens new pathways for integrating magnonic frequency combs into practical spintronic devices.