6533b81ffe1ef96bd1277b6e
RESEARCH PRODUCT
Switching by Domain-Wall Automotion in Asymmetric Ferromagnetic Rings
Gisela SchützMarkus WeigandRobert M. ReeveBenjamin KrügerAndré BisigAndré BisigMathias KläuiK. RichterFlorian KronastMohamad-assaad MawassMohamad-assaad MawassMohamad-assaad MawassAndrea KroneHermann Stollsubject
010302 applied physicsPhysicsField (physics)Condensed matter physicsMagnetic logicGeneral Physics and AstronomyLarge scale facilities for research with photons neutrons and ions01 natural sciencesVortexMagnetic fieldMagnetizationDomain wall (magnetism)Ferromagnetism0103 physical sciences010306 general physicsTopology (chemistry)description
A ring-shaped magnetic logic device offers two vortex states (clockwise and counterclockwise) to encode bits, with relative stability against external magnetic fields. The dynamics of magnetization switching in such structures, though, still need unraveling. The authors present direct experimental visualization of reproducible, robust switching in magnetic rings via domain-wall automotion, which does not require an applied field. Simulations reveal that annihilation of domain walls through automotion always occurs, with the detailed topology of the walls only influencing the dynamics locally, in line with the experimental results.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-04-18 | Physical Review Applied |