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Coupling efficiency for phase locking of a spin transfer nano-oscillator to a microwave current
Authors:Georges B  Grollier J  Darques M  Cros V  Deranlot C  Marcilhac B  Faini G  Fert A
Institution:Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, RD 128, 91767 Palaiseau, France.
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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