Phase locking dynamics of dipolarly coupled vortex-based spin transfer oscillators
arXiv:1202.5499 · doi:10.1103/PhysRevB.85.100409
Abstract
Phase locking dynamics of dipolarly coupled vortices excited by spin-polarized current in two identical nanopillars is studied as a function of the interpillar distance L. Numerical study and analytical model have proved the remarkable efficiency of magneto-static interaction to achieve phase locking. Investigating the dynamics in the transient regime towards phase locking, we extract the evolution of the locking time τ, the coupling strength μ and the interaction energy W. Finally, we compare this coupling energy with the one obtained by simple model.
4 pages, 4 figures
References in corpus (14)
- Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
- Magnetic vortex oscillator driven by dc spin-polarized current
- Large microwave generation from d.c. driven magnetic vortex oscillators in magnetic tunnel junctions
- Magnetic Vortex Core Dynamics in a Ferromagnetic Dot
- Stability of magnetic vortex in soft magnetic nano-sized circular cylinder
- Vortex oscillations induced by a spin-polarized current in a magnetic nanopillar: Evidence for a failure of the Thiele approach
- Dynamics of coupled vortices in a pair of ferromagnetic disks
- Dynamics of two coupled vortices in a spin valve nanopillar excited by spin transfer torque
- Excitation of spin dynamics by spin-polarized current in vortex state disks
- Phase locking of vortex based spin transfer oscillators to a microwave current
- Dynamics of coupled vortices in layered magnetic nanodots
- Agility of vortex-based nanocontact spin torque oscillators
- Oscillatory transient regime in the forced dynamics of a spin torque nano-oscillator
- Critical velocity for the vortex core reversal in perpendicular bias magnetic field
Cited by in corpus (20)
- Reservoir Computing on Spin-Torque Oscillator Array
- A spiking neuron constructed by the skyrmion-based spin torque nano-oscillator
- Describing synchronization and topological excitations in arrays of magnetic spin torque oscillators through the Kuramoto model
- Perfect and robust phase-locking of a spin transfer vortex nano-oscillator to an external microwave source
- Measurement of the dynamical dipolar coupling in a pair of magnetic nano-disks using a Ferromagnetic Resonance Force Microscope
- Robust synchronization of an arbitrary number of spin-torque driven vortex nanooscillators
- Optimizing magneto-dipolar interactions for synchronizing vortex based spin-torque nano-oscillators
- An analytical computation of magnetic field generated from a cylinder ferromagnet
- Direct observation of magnetization dynamics generated by nano-contact spin-torque vortex oscillators
- Probing phase coupling between two spin-torque nano-oscillators with external source
- Synchronization of spin-torque driven nanooscillators for point contacts on a quasi-1D nanowire: Micromagnetic simulations
- Super-harmonic injection locking of nano-contact spin-torque vortex oscillators
- Controlling the synchronization properties of two dipolarly coupled vortex based spin-torque nano-oscillators by the intermediate of a third one
- Selective control of vortex polarities by microwave field in two robustly synchronized spin-torque nano-oscillators
- Quantitative and realistic description of the magnetic potential energy of spin-torque vortex oscillators
- Dancing Synchronization in Coupled Spin-Torque Nano-Oscillators
- Vortex Mechanics in Thin Ferromagnetic Nanodisks
- The role of damping rate amplitude in the synchronization of two coupled oscillators
- Switching based Spin Transfer Torque Oscillator with zero-bias field and large tuning-ratio
- Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators