Propagation and control of nano-scale, magnetic droplet solitons
arXiv:1202.3421 · doi:10.1103/PhysRevB.85.214433
Abstract
The propagation and controlled manipulation of strongly nonlinear, two-dimensional solitonic states in a thin, anisotropic ferromagnet are theoretically demonstrated. It has been recently proposed that spin-polarized currents in a nanocontact device could be used to nucleate a stationary dissipative droplet soliton. Here, an external magnetic field is introduced to accelerate and control the propagation of the soliton in a lossy medium. Soliton perturbation theory corroborated by two-dimensional micromagnetic simulations predicts several intriguing physical effects, including the acceleration of a stationary soliton by a magnetic field gradient, the stabilization of a stationary droplet by a uniform control field in the absence of spin torque, and the ability to control the soliton's speed by use of a time-varying, spatially uniform external field. Soliton propagation distances approach 10 m in low loss media, suggesting that droplet solitons could be viable information carriers in future spintronic applications, analogous to optical solitons in fiber optic communications.
7 pages, 6 figures
References in corpus (5)
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Cited by in corpus (20)
- Stable Magnetic Droplet Solitons in Spin Transfer Nanocontacts
- Confined dissipative droplet solitons in spin-valve nanowires with perpendicular magnetic anisotropy
- Observation of droplet soliton drift resonances in a spin-transfer-torque nanocontact to a ferromagnetic thin film
- Parametric Auto-Excitation of Magnetic Droplet Soliton Perimeter Modes
- Generation linewidth of mode-hopping spin torque oscillators
- Merging droplets in double nano-contact spin torque oscillators
- Magnetic lump motion in saturated ferromagnetic films
- Magnetic droplet solitons generated by pure spin currents
- Attraction, Merger, Reflection, and Annihilation in Magnetic Droplet Soliton Scattering
- Recent Progress on Electrical Excitation and Manipulation of Spin-Waves in Spin Hall Nano-Oscillators
- Effects of thermal perturbations on magnetic dissipative droplet solitons
- Magnetic Droplet Solitons
- Analytical theory of modulated magnetic solitons
- Perturbation Theory for Propagating Magnetic Droplet Solitons
- Effective Generation of Closed-form Soliton Solutions of the Continuous Classical Heisenberg Ferromagnet Equation
- Chiral excitations of magnetic droplet solitons driven by their own inertia
- Propagating magnetic droplet solitons as moveable nanoscale spin-wave sources with tunable direction of emission
- Tuning the dynamics of magnetic droplet solitons using dipolar interactions
- Patterns formation in axially symmetric Landau-Lifshitz-Gilbert-Slonczewski equations
- Dynamical magnetic skyrmions