Effective description of domain wall strings

Abstract

The analysis of domain wall dynamics is often simplified to one dimensional physics. For domain walls in thin films, more realistic approaches require the description as two dimensional objects. This includes the study of vortices and curvatures along the domain walls as well as the influence of boundary effects. Here we provide a theory in terms of soft modes that allows to analytically study the physics of extended domain walls and their stability. By considering irregular shaped skyrmions as closed domain walls, we analyze their plasticity and compare their dynamics with those of circular skyrmions. Our theory directly provides an analytical description of the the excitation modes of magnetic skyrmions, previously only accessible by sophisticated micromagnetic numerical calculations and spectral analysis. These analytical expressions provide the scaling behaviour of the different physics on parameters that experiments can test.

References in corpus (13)

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Cited by in corpus (12)

• Magnetic texture based magnonics
• Skyrmion pinning energetics in thin film systems
• Characterizing breathing dynamics of magnetic (anti-)skyrmions within the Hamiltonian formalism
• Spin-transfer torque-driven motion, deformation, and instabilities of magnetic skyrmions at high currents
• Spin eigen-excitations of an antiferromagnetic skyrmion
• Dynamic Excitations of Chiral Magnetic Textures
• Curvature induced drift and deformation of magnetic skyrmions: comparison of ferro- and antiferromagnetic cases
• Nonlinear dynamics of topological ferromagnetic textures for frequency multiplication
• Current-induced H-shaped-skyrmion creation and their dynamics in the helical phase
• Current-Induced Dynamics of Chiral Magnetic Structures: Creation, Motion, and Applications
• Ultra-sensitive voltage-controlled skyrmion-based spintronic diode
• Skyrmion Lattice Domain Formation in a Non-Flat Energy Landscape