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  Vortex circulation patterns in planar microdisk arrays

Velten, S., Streubel, R., Farhan, A., Kent, N., Im, M.-Y., Scholl, A., et al. (2017). Vortex circulation patterns in planar microdisk arrays. Applied Physics Letters, 110: 262406. doi:10.1063/1.4990990.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-A482-B Version Permalink: http://hdl.handle.net/21.11116/0000-0004-93C4-8
Genre: Journal Article

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1.4990990 (Publisher version), 2MB
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https://dx.doi.org/10.1063/1.4990990 (Publisher version)
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 Creators:
Velten, S.1, 2, Author
Streubel, R.1, Author
Farhan, A., Author
Kent, N.1, 3, Author
Im, M.-Y.4, 5, Author
Scholl, A.6, Author
Dhuey, S.7, Author
Behncke, C.2, Author
Meier, G.8, Author              
Fischer, P.1, 3, Author
Affiliations:
1Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA, ou_persistent22              
2Institut für Nanostruktur- und Festkörperphysik, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany, ou_persistent22              
3Physics Department, University of California, 1156 High Street, Santa Cruz, California 95064, US, ou_persistent22              
4Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720, U, ou_persistent22              
5Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 711-873, South Korea, ou_persistent22              
6Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA, ou_persistent22              
7Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA, ou_persistent22              
8Dynamics and Transport in Nanostructures, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074319              

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 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 lat- tice, 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.

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Language(s): eng - English
 Dates: 2017-04-252017-06-182017-06-302017-06-30
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4990990
 Degree: -

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Title: Applied Physics Letters
  Abbreviation : Appl. Phys. Lett.
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: - Volume / Issue: 110 Sequence Number: 262406 Start / End Page: - Identifier: Other: 0003-6951
CoNE: /journals/resource/954922836223