Chaotic dynamics in a macrospin spin-torque nano-oscillator with delayed feedback
Mesoscale and Nanoscale Physics
2019-03-13 v2 Chaotic Dynamics
Abstract
A theoretical study of delayed feedback in spin-torque nano-oscillators is presented. A macrospin geometry is considered, where self-sustained oscillations are made possible by spin transfer torques associated with spin currents flowing perpendicular to the film plane. By tuning the delay and amplification of the self-injected signal, we identify dynamical regimes in this system such as chaos, switching between precession modes with complex transients, and oscillator death. Such delayed feedback schemes open up a new field of exploration for such oscillators, where the complex transient states might find important applications in information processing.
Cite
@article{arxiv.1709.04310,
title = {Chaotic dynamics in a macrospin spin-torque nano-oscillator with delayed feedback},
author = {Jérôme Williame and Artur Difini Accioly and Damien Rontani and Marc Sciamanna and Joo-Von Kim},
journal= {arXiv preprint arXiv:1709.04310},
year = {2019}
}
Comments
5 pages, 7 figures