Current-driven vortex domain wall dynamics by micromagnetic simulations

Abstract

Current-driven vortex wall dynamics is studied by means of a two-dimensional analytical model and micromagnetic simulation. By constructing a trial function for the vortex wall in the magnetic wire, we analytically solve for domain wall velocity and deformation in the presence of the current-induced spin torque. A critical current for the domain wall transformation from the vortex wall to the transverse wall is calculated. A comparison between the field- and current-driven wall dynamics is carried out. Micromagnetic simulations are performed to verify our analytical results.

7 pages, 4 figures

References in corpus (5)

• Roles of non-equilibrium conduction electrons on magnetization dynamics of ferromagnets
• Micromagnetic understanding of current-driven domain wall motion in patterned nanowires
• Direct observation of domain-wall configurations transformed by spin currents
• Domain wall dynamics driven by adiabatic spin transfer torques
• Fractional vortices and composite domain walls in flat nanomagnets

Cited by in corpus (25)

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• Understanding of complex periodic transformations of moving domain walls in magnetic nanostripes
• Current induced rotational torques in the skyrmion lattice phase of chiral magnets
• Harmonic oscillator model for current- and field-driven magnetic vortices
• Spin torque and force due to current for general spin textures
• Adiabatic Domain Wall Motion and Landau-Lifshitz Damping
• Current-Driven Domain-Wall Dynamics in Curved Ferromagnetic Nanowires
• Spin transfer torque in continuous textures: semiclassical Boltzmann approach
• Spin-transfer torque-driven motion, deformation, and instabilities of magnetic skyrmions at high currents
• Current-driven and field-driven domain walls at nonzero temperature
• Magnetic vortex chirality switching in Permalloy nanowires with asymmetric notches
• Current-driven skyrmion Depinning in Magnetic Granular Films
• Current- and field-driven magnetic antivortices
• Intrinsic non-adiabatic topological torque in magnetic skyrmions and vortices
• Influence of nonlocal damping on the field-driven domain wall motion
• Dissipative hydrodynamic equation of a ferromagnetic Bose-Einstein condensate: Analogy to magnetization dynamics in conducting ferromagnets
• Effects of disorder on magnetic vortex gyration
• Spin Hall Effect-driven Spin Torque in Magnetic Texture
• Current-Induced Resonant Motion of a Magnetic Vortex Core: Effect of Nonadiabatic Spin Torque
• Non-equilibrium thermodynamic study of magnetization dynamics in the presence of spin-transfer torque
• Controlling stable Bloch points with electric currents
• Domain wall propagation by spin-orbit torques in in-plane magnetized systems