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Ballistic rectification of vortex domain wall chirality at nanowire corners

Title
Ballistic rectification of vortex domain wall chirality at nanowire corners
Authors
Omari, K[Omari, K.]Bradley, RC[Bradley, R. C.]Broomhall, TJ[Broomhall, T. J.]Hodges, MPP[Hodges, M. P. P.]Rosamond, MC[Rosamond, M. C.]Linfield, EH[Linfield, E. H.]Im, MY[Im, M. -Y.]Fischer, P[Fischer, P.]Hayward, TJ[Hayward, T. J.]
DGIST Authors
Im, MY[Im, M. -Y.]
Issue Date
2015-11-30
Citation
Applied Physics Letters, 107(22)
Type
Article
Article Type
Article
Keywords
Applied Magnetic FieldsArtificial DefectsChiralityDomain PropagationDomain WallsMagnetic DomainsMagnetic NanowiresMagnetismMagneto-Optic Kerr Effect MeasurementsNanowiresSensor TechnologiesSoft X-Ray Transmission MicroscopyVortex Domain WallVortex Flow
ISSN
0003-6951
Abstract
The interactions of vortex domain walls with corners in planar magnetic nanowires are probed using magnetic soft X-ray transmission microscopy. We show that when the domain walls are propagated into sharp corners using applied magnetic fields above a critical value, their chiralities are rectified to either clockwise or anticlockwise circulation depending on whether the corners turn left or right. Single-shot focused magneto-optic Kerr effect measurements are then used to demonstrate how, when combined with modes of domain propagation that conserve vortex chirality, this allows us to dramatically reduce the stochasticity of domain pinning at artificial defect sites. Our results provide a tool for controlling domain wall chirality and pinning behavior both in further experimental studies and in future domain wall-based memory, logic and sensor technologies. © 2015 AIP Publishing LLC.
URI
http://hdl.handle.net/20.500.11750/2575
DOI
10.1063/1.4936565
Publisher
American Institute of Physics Publishing
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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