Curvature and torsion effects in the spin-current driven domain wall motion

Abstract

The domain wall motion along a helix-shaped nanowire is studied for the case of spin-current driving via Bazaliy-Zhang-Li mechanism. The analysis is based on collective variable approach. Two new effects are ascertained: (i) the curvature results in appearance of the Walker limit for a uniaxial wire, (ii) the torsion results in effective shift of the nonadiabatic spin torque parameter $\beta$. The latter effect changes considerably the domain wall velocity and can result in negative domain wall mobility. This effect can be also used for an experimental determination of the nonadiabatic parameter $\beta$ and damping coefficient $\alpha$.

References in corpus (8)

• Spin Transfer Torques
• Microscopic approach to current-driven domain wall dynamics
• Curvature effects in statics and dynamics of low dimensional magnets
• Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets
• Curvature induced domain wall pinning
• Torsion induced effects in magnetic nanowires
• Rashba Torque Driven Domain Wall Motion in Magnetic Helices
• A combined first-principles and thermodynamic approach to M-Nitronyl Nitroxide (M=Co, Mn) spin helices

Cited by in corpus (18)

• Micromagnetic Theory of Curvilinear Ferromagnetic Shells
• Electronic materials with nanoscale curved geometries
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• Vortex-antivortex pairs induced by curvature in toroidal nanomagnets
• Oscillatory behavior of the domain wall dynamics in a curved cylindrical magnetic nanowire
• Localization of magnon modes in a curved magnetic nanowire
• Curvature induced magnonic crystal in nanowires
• Domain wall damped harmonic oscillations induced by curvature gradients in elliptical magnetic nanowires
• Fractional Skyrmion Tubes in Chiral-Interfaced Three-Dimensional Magnetic Nanowires
• Quantum mechanics of fermion confined to a curved surface in Foldy-Wouthuysen representation
• Manipulation by magnetic frustration in ferrotoroidal spin chains via curvature and torsion
• Dynamics of domain walls in curved antiferromagnetic wires
• Thermoelectric and magneto-transport characteristics of interconnected networks of ferromagnetic nanowires and nanotubes
• Chiral breakdown engineered by mesoscale Dzyaloshinskii-Moriya interaction in biaxial magnetic nanotubes
• Spin-orbit torque driven motion of chiral domain walls induced by radial magnetization in nanotube geometry
• A supersymmetric spin current