Generation linewidth of an auto-oscillator with a nonlinear frequency shift: spin-torque nano-oscillator.
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.
Kim
Joo-Von
JV
Institut d'Electronique Fondamentale, UMR CNRS 8622, Université Paris-Sud, 91405 Orsay cedex, France. joo-von.kim@ief.u-psud.fr
Tiberkevich
Vasil
V
Slavin
Andrei N
AN