Title :
Non-autonomous dynamics of a nonlinear spin-torque nano-oscillator
Author :
Slavin, A.N. ; Tiberkevich, V.S.
Author_Institution :
Dept. of Phys., Oakland Univ., Rochester, MI, USA
Abstract :
A theory of non-autonomous dynamics of a strongly nonlinear spin-torque nano-oscillator in the presence of external periodic and/or chaotic (e.g. thermal noise) signals is developed. This theory is based on the nonlinear oscillator equation for the complex amplitude of a spin wave excited by spin polarized current. The nonlinearity of the spin-torque oscillator characterized by the coefficient v is, also, responsible for the asymmetry, broadening, and non-Lorentzian shape of the generation line near the auto-oscillation threshold.
Keywords :
chaos; magnetoelectronics; nanoelectronics; nonlinear equations; oscillators; spin dynamics; spin polarised transport; spin waves; thermal noise; autooscillation; chaotic signal; complex amplitude; external periodic signal; generation line asymmetry; generation line broadening; nonLorentzian shape; nonautonomous dynamics; nonlinear oscillator equation; nonlinear spin-torque nanooscillator; spin polarized current; spin wave excitation; thermal noise; Damping; Fluctuations; Frequency; Noise level; Nonlinear equations; Oscillators; Physics; Power generation; Stochastic resonance; USA Councils;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297340
