Emergent electromagnetism induced by topological defects created during magnetization reversal in nanowires

Abstract

We report that the irreversible magnetization switching process in ferromagnetic nanoparticles is governed by the formation and dynamics of topological point-defects in the form of hedgehog-antihedgehog pairs. After nucleation, these pairs rapidly separate with speeds exceeding domain wall velocities, and they generate an emergent electric field of solenoidal character and substantial magnitude.

6 pages, 4 figures

References in corpus (4)

• Skyrmions in Magnetic Multilayers
• Experimental observation of magnetic bobbers for a new concept of magnetic solid-state memory
• Chiral Bobbers and Skyrmions in Epitaxial FeGe/Si(111) Films
• Spontaneous skyrmion chains in nanorods with chiral interactions

Cited by in corpus (13)

• Direct demonstration of topological stability of magnetic skyrmions via topology manipulation
• Creation of a Chiral Bobber Lattice in Helimagnet-Multilayer Heterostructures
• Domain wall pinning in a circular cross-section wire with modulated diameter
• Micromagnetic modelling of magnetic domain walls and domains in cylindrical nanowires
• Tuneable terahertz oscillation arising from Bloch-point dynamics in chiral magnets
• Phase degree of freedom and topology in multiple-$Q$ spin textures
• Domain wall damped harmonic oscillations induced by curvature gradients in elliptical magnetic nanowires
• Prediction of confined and controllable Bloch points in nanocubes of chiral magnets
• Ultrafast manipulations of nanoscale skyrmioniums
• Nonlinearity and Topology
• Regularized Micromagnetic Theory for Bloch Points
• An experimental analysis from the magnetic interactions in nanowire arrays
• Magnetic Bloch-point hopping in multilayer skyrmions and associated emergent electromagnetic signatures