title: Coupling efficiency for phase locking of a spin transfer nano-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.
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, RD 128, 91767 Palaiseau, France.
authors.forename: B
authors.initials: B
authors.lastname: Georges
authors.forename: J
authors.initials: J
authors.lastname: Grollier
authors.forename: M
authors.initials: M
authors.lastname: Darques
authors.forename: V
authors.initials: V
authors.lastname: Cros
authors.forename: C
authors.initials: C
authors.lastname: Deranlot
authors.forename: B
authors.initials: B
authors.lastname: Marcilhac
authors.forename: G
authors.initials: G
authors.lastname: Faini
authors.forename: A
authors.initials: A
authors.lastname: Fert