6533b830fe1ef96bd12965ab
RESEARCH PRODUCT
Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect.
Markus WeigandAndré BisigMathias KläuiJan RhensiusJan RhensiusMatthias KammererBartel Van WaeyenbergeChristoforos MoutafisChristoforos MoutafisChristoforos MoutafisGisela SchützKyung Jin LeeCollins Ashu AkosaT. TyliszczakJ. HeidlerJ. HeidlerJ. HeidlerAurelien ManchonHermann StollGillian KilianiJung Hwan MoonArndt Von BierenArndt Von BierenArndt Von BierenMichael Curcicsubject
PhysicsCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsTexture (cosmology)SkyrmionGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesGyrationVortexHall effectCondensed Matter::Superconductivity0103 physical sciencesMagnetic dampingMesoscale and Nanoscale Physics (cond-mat.mes-hall)010306 general physics0210 nano-technologyExcitationSpin-½description
We present a combined theoretical and experimental study, investigating the origin of the enhanced non-adiabaticity of magnetic vortex cores. Scanning transmission X-ray microscopy is used to image the vortex core gyration dynamically to measure the non-adiabaticity with high precision, including a high confidence upper bound. Using both numerical computations and analytical derivations, we show that the large non-adiabaticity parameter observed experimentally can be explained by the presence of local spin currents arising from a texture-induced emergent Hall effect. This enhanced non-adiabaticity is only present in two- and three-dimensional magnetic textures such as vortices and skyrmions and absent in one-dimensional domain walls, in agreement with experimental observations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-12-30 | Physical review letters |