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

fYear

2009

fDate

14-18 Sept. 2009

Firstpage

823

Lastpage

824

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICEAA.2009.5297340

Filename

5297340