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Vortex circulation patterns in planar microdisk arrays

Title
Vortex circulation patterns in planar microdisk arrays
Author(s)
Velten, SvenStreubel, RobertFarhan, AlanKent, NoahIm, Mi-YoungScholl, AndreasDhuey, ScottBehncke, CarolinMeier, GuidoFischer, Peter
Issued Date
2017-06-26
Citation
Applied Physics Letters, v.110, no.26
Type
Article
Keywords
Artificial Spin IceFilmshoneycomb StructuresFlux Closure StateHoneycomb LatticesMagnetic X Ray MicroscopyMagnetostatic InteractionsMagnetostaticsMicromagnetic SimulationsNucleation ProcessPattern FormationSkyrmionsVortex CirculationVortex Flow
ISSN
0003-6951
Abstract
We report a magnetic X-ray microscopy study of the pattern formation of circulation in arrays of magnetic vortices ordered in a hexagonal and a honeycomb lattice. In the honeycomb lattice, we observe at remanence an ordered phase of alternating circulations, whereas in the hexagonal lattice, small regions of alternating lines form. A variation in the edge-to-edge distance shows that the size of those regions scales with the magnetostatic interaction. Micromagnetic simulations reveal that the patterns result from the formation of flux closure states during the nucleation process. © 2017 Author(s).
URI
http://hdl.handle.net/20.500.11750/4144
DOI
10.1063/1.4990990
Publisher
American Institute of Physics Inc.
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Appears in Collections:
Department of Physics and Chemistry ETC 1. Journal Articles
ETC 1. Journal Articles

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