Magneto-acoustic YIG-GGG-based oscillators for signal processing and unconventional computing

Artem Litvinenko; Roman Khymyn; Ahmad A. Awad; Johan Åkerman

doi:10.1117/12.3027981

4 October 2024 Magneto-acoustic YIG-GGG-based oscillators for signal processing and unconventional computing

Artem Litvinenko, Roman Khymyn, Ahmad A. Awad, Johan Åkerman

Proceedings Volume PC13119, Spintronics XVII; PC1311923 (2024) https://doi.org/10.1117/12.3027981
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

Strong magneto-elastic coupling in Yittrium Iron Garnet (YIG) - Gadolinium Gallium Garnet (GGG) structures allows for effective hybridization and transduction between acoustic and spin waves and resonance. It allows to design hybrid magneto-acoustic devices for signal processing and computing that combine the advantages of both fields. We design magneto-acoustic oscillators operating in low-phase noise, chaotic, and burst regimes. The low-phase noise YIG-GGG oscillator can be tuned between high overtone bulk acoustic wave resonance with an applied external magnetic field that changes the ferromagnetic resonance of YIG film and demonstrates exceptional frequency stability due high-Q factor of an acoustic subsystem. The chaotic magneto-acoustic oscillator operates in a chaotic, modulated, and single-frequency regime which can be controlled by an external low-frequency modulation signal. We also demonstrate a time-multiplexed magneto-acoustic oscillator array design based on a single YIG-GGG structure that can be exploited for large-scale Ising machines.

Conference Presentation

Citation Download Citation

Artem Litvinenko, Roman Khymyn, Ahmad A. Awad, and Johan Åkerman "Magneto-acoustic YIG-GGG-based oscillators for signal processing and unconventional computing", Proc. SPIE PC13119, Spintronics XVII, PC1311923 (4 October 2024); https://doi.org/10.1117/12.3027981

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