title: Generation linewidth of an auto-oscillator with a nonlinear frequency shift: spin-torque nano-oscillator.
abstract: It is shown that the generation linewidth of an auto-oscillator with a nonlinear frequency shift (i.e., an auto-oscillator in which frequency depends on the oscillation amplitude) is substantially larger than the linewidth of a conventional quasilinear auto-oscillator due to the renormalization of the phase noise caused by the nonlinearity of the oscillation frequency. The developed theory, when applied to a spin-torque auto-oscillator, gives a good description of experimentally measured angular and temperature dependences of the linewidth.
authors.affiliation: Institut d'Electronique Fondamentale, UMR CNRS 8622, Université Paris-Sud, 91405 Orsay cedex, France. joo-von.kim@ief.u-psud.fr
authors.forename: Joo-Von
authors.initials: JV
authors.lastname: Kim
authors.forename: Vasil
authors.initials: V
authors.lastname: Tiberkevich
authors.forename: Andrei N
authors.initials: AN
authors.lastname: Slavin