Chaotic dynamics in a macrospin spin-torque nano-oscillator with delayed feedback

Autor:	Williame, Jérôme, Accioly, Artur Difini, Rontani, Damien, Sciamanna, Marc, Kim, Joo-Von
Rok vydání:	2017
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Nonlinear Sciences - Chaotic Dynamics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 5 pages, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1709.04310 Zobrazit plný text záznamu View this record from Arxiv