Coupling efficiency for phase locking of a spin transfer oscillator to a microwave current

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.

References in corpus (3)

• Impact of the electrical connection of N Spin Transfer Oscillators on their synchronization : an analytical study
• Large-amplitude coherent spin waves exited by spin-polarized current in nanoscale spin valves
• Lineshape distortion in a nonlinear auto-oscillator near generation threshold: Application to spin-torque nano-oscillators