Chaotic Dynamics of Spin-Valve Oscillators

Abstract

Recent experimental and theoretical studies on the magnetization dynamics driven by an electric current have uncovered a number of unprecedented rich dynamic phenomena. We predict an intrinsic chaotic dynamics that has not been previously anticipated. We explicitly show that the transition to chaotic dynamics occurs through a series of period doubling bifurcations. In chaotic regime, two dramatically different power spectra, one with a well-defined peak and the other with a broadly distributed noise, are identified and explained.

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Cited by in corpus (29)

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• The Fascinating World of Landau-Lifshitz-Gilbert Equation: An Overview
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• Stochastic resonance of a nanomagnet excited by spin transfer torque
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• Synchronization and chaos in a spin-torque oscillator with a perpendicularly magnetized free layer
• Chaos in nanomagnet via feedback current
• Time domain study of frequency-power correlation in spin-torque oscillators
• Regular and chaotic vortex core reversal by a resonant perpendicular magnetic field
• Pattern generation and symbolic dynamics in a nanocontact vortex oscillator
• Synchronization of an array of spin torque nano oscillators in periodic applied external magnetic field
• Bifurcation and chaos in spin-valve pillars in a periodic applied magnetic field
• Nonlinear Spin-Charge Dynamics in a Driven Double Quantum Dot
• Input-driven chaotic dynamics in vortex spin-torque oscillator
• Linear dynamics of classical spin as Möbius transformation
• Enhanced synchronization in an array of spin torque nano oscillators in the presence of oscillating external magnetic field
• Tunable Transient Decay Times in Nonlinear Systems: Application to Magnetic Precession
• Phase locking of spin transfer nano-oscillators using common microwave sources
• Exact Intrinsic Localized Excitation of an Anisotropic Ferromagnetic Spin Chain in External Magnetic Field with Gilbert Damping, Spin Current and PT-Symmetry
• Chaotic Spin Dynamics of a Long Nanomagnet Driven by a Current
• Regular and irregular dynamics of Dirac-Weyl wavepackets in a mesoscopic quantum dot at the edge of topological insulator
• Eddy current effects in the magnetization dynamics of ferromagnetic metal nanoparticles
• Signal detection based on the chaotic motion of an antiferromagnetic domain wall
• Bifurcation to complex dynamics in largely modulated voltage-controlled parametric oscillator
• Chaotic magnetization dynamics driven by feedback magnetic field
• Chaotic spin precession in antiferromagnetic domain walls
• Skyrmion dynamics in a chiral magnet driven by periodically varying spin currents
• Spin-transfer torque driven localized spin excitations in the presence of field-like torque
• Feedback voltage driven chaos in a three-terminal spin-torque oscillator