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arXiv · 2411.03870

Ultra-fast spin Hall nano-oscillator based microwave spectral analysis

Pankhuri Gupta·Artem Litvinenko·Akash Kumar·Pranaba Kishor Muduli·Johan Åkerman
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Abstract

Ultra-fast spectrum analysis concept based on rapidly tuned spintronic nano-oscillators has been under development for the last few years and has already demonstrated promising results. Here, we demonstrate an ultra-fast microwave spectrum analyzer based on a chain of five mutually synchronized nano-constriction spin Hall nano-oscillators (SHNOs). As mutual synchronization affords the chain a much improved signal quality, with linewidths well below 1 MHz at close to a 10 GHz operating frequency, we observe an order of magnitude better frequency resolution bandwidth compared to previously reported spectral analysis based on single magnetic tunnel junction based spin torque nano-oscillators. The high-frequency operation and ability to synchronize long SHNO chains and large arrays make SHNOs ideal candidates for ultra-fast microwave spectral analysis.

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Pankhuri Gupta, Artem Litvinenko, Akash Kumar, Pranaba Kishor Muduli, Johan Åkerman. 2024-11-06. Ultra-fast spin Hall nano-oscillator based microwave spectral analysis. https://arxiv.org/abs/2411.03870

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