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RESEARCH PRODUCT
Effective description of domain wall strings
Davi R. RodriguesDavi R. RodriguesJairo SinovaKarin Everschor-sitteAr. Abanovsubject
PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsSkyrmionFOS: Physical sciences02 engineering and technologySoft modesPhysik (inkl. Astronomie)021001 nanoscience & nanotechnology01 natural sciencesStability (probability)Domain (software engineering)VortexDomain wall (string theory)Classical mechanics0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)010306 general physics0210 nano-technologyScalingExcitationdescription
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 us to analytically study the physics of extended domain walls and their stability. By considering irregularly 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 excitation modes of magnetic skyrmions, previously accessible only through sophisticated micromagnetic numerical calculations and spectral analysis. These analytical expressions provide the scaling behavior of the different physics on parameters that experiments can test.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-12-28 |