Coupling efficiency for phase locking of a spin transfer nano-oscillator to a microwave current |
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Authors: | Georges B Grollier J Darques M Cros V Deranlot C Marcilhac B Faini G Fert A |
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Institution: | Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, RD 128, 91767 Palaiseau, France. |
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Abstract: | The phase locking behavior of spin transfer nano-oscillators (STNOs) to an external microwave signal is experimentally studied as a function of the STNO intrinsic parameters. We extract the coupling strength from our data using the derived phase dynamics of a forced STNO. The predicted trends on the coupling strength for phase locking as a function of intrinsic features of the oscillators, i.e., power, linewidth, agility in current, are central to optimize the emitted power in arrays of mutually coupled STNOs. |
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