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arXiv · 1102.5048

Noise properties of a resonance-type spin-torque microwave detector

Oleksandr Prokopenko·Gennadiy Melkov·Elena Bankowski·Thomas Meitzler·Vasil Tiberkevich·Andrei Slavin
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Abstract

We analyze performance of a resonance-type spin-torque microwave detector (STMD) in the presence of noise and reveal two distinct regimes of STMD operation. In the first (high-frequency) regime the minimum detectable microwave power $P_{\rm min}$ is limited by the low-frequency Johnson-Nyquist noise and the signal-to-noise ratio (SNR) of STMD is proportional to the input microwave power $P_{\rm RF}$. In the second (low-frequency) regime $P_{\rm min}$ is limited by the magnetic noise, and the SNR is proportional to $\sqrt{P_{\rm RF}}$. The developed formalism can be used for the optimization of the practical noise-handling parameters of a STMD.

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Oleksandr Prokopenko, Gennadiy Melkov, Elena Bankowski, Thomas Meitzler, Vasil Tiberkevich, Andrei Slavin. 2011-02-24. Noise properties of a resonance-type spin-torque microwave detector. https://doi.org/10.1063/1.3612917

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