Topological changes of two-dimensional magnetic textures
Résumé
We investigate the interaction of magnetic vortices and skyrmions with a spin-polarized current. In a square lattice, fixed classical spins and quantum itinerant electrons evolve according to the coupled Landau-Lifshitz and Schrödinger equations. Changes in the topology occur at microscopic time and length scales and are shown to be triggered by the nucleation of a nontrivial electron-spin structure at the vortex core.
Domaines
Matière Condensée [cond-mat]
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