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arXiv · 0910.2819

Non-linear frequency and amplitude modulation of a nano-contact spin torque oscillator

P. K. Muduli·Ye. Pogoryelov·S. Bonetti·G. Consolo·Fred Mancoff·Johan Åkerman
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Abstract

We study the current controlled modulation of a nano-contact spin torque oscillator. Three principally different cases of frequency non-linearity ($d^{2}f/dI^{2}_{dc}$ being zero, positive, and negative) are investigated. Standard non-linear frequency modulation theory is able to accurately describe the frequency shifts during modulation. However, the power of the modulated sidebands only agrees with calculations based on a recent theory of combined non-linear frequency and amplitude modulation.

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P. K. Muduli, Ye. Pogoryelov, S. Bonetti, G. Consolo, Fred Mancoff, Johan Åkerman. 2009-10-15. Non-linear frequency and amplitude modulation of a nano-contact spin torque oscillator. https://doi.org/10.1103/physrevb.81.140408

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