Vortex circulation patterns in planar microdisk arrays
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.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Hamburg (Germany)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Santa Cruz, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Daegu Gyeongbuk Inst. of Science and Technology, Daegu (South Korea, Republic of)
- Univ. of Hamburg (Germany)
- Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg (Germany)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1439220
- Alternate Identifier(s):
- OSTI ID: 1371495
- Grant/Contract Number:
- AC02-05CH11231; AC02-05- CH11231; AC02-05-CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 110; Journal Issue: 26; Related Information: © 2017 Author(s).; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Velten, Sven, Streubel, Robert, Farhan, Alan, Kent, Noah, Im, Mi-Young, Scholl, Andreas, Dhuey, Scott, Behncke, Carolin, Meier, Guido, and Fischer, Peter. Vortex circulation patterns in planar microdisk arrays. United States: N. p., 2017.
Web. doi:10.1063/1.4990990.
Velten, Sven, Streubel, Robert, Farhan, Alan, Kent, Noah, Im, Mi-Young, Scholl, Andreas, Dhuey, Scott, Behncke, Carolin, Meier, Guido, & Fischer, Peter. Vortex circulation patterns in planar microdisk arrays. United States. https://doi.org/10.1063/1.4990990
Velten, Sven, Streubel, Robert, Farhan, Alan, Kent, Noah, Im, Mi-Young, Scholl, Andreas, Dhuey, Scott, Behncke, Carolin, Meier, Guido, and Fischer, Peter. Mon .
"Vortex circulation patterns in planar microdisk arrays". United States. https://doi.org/10.1063/1.4990990. https://www.osti.gov/servlets/purl/1439220.
@article{osti_1439220,
title = {Vortex circulation patterns in planar microdisk arrays},
author = {Velten, Sven and Streubel, Robert and Farhan, Alan and Kent, Noah and Im, Mi-Young and Scholl, Andreas and Dhuey, Scott and Behncke, Carolin and Meier, Guido and Fischer, Peter},
abstractNote = {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.},
doi = {10.1063/1.4990990},
journal = {Applied Physics Letters},
number = 26,
volume = 110,
place = {United States},
year = {Mon Jun 26 00:00:00 EDT 2017},
month = {Mon Jun 26 00:00:00 EDT 2017}
}
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Cited by: 15 works
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Figures / Tables:
FIG. 1: Scanning electron micrographs of the vortex lattices with the edget-o-edge distance de = 70 nm for the (a) hexagonal lattice and (b) honeycomb lattice. The illustrated symmetry directions [10] and [01] are valid for both lattices. The mid-inset illustrates the X-ray wavevector component $\vec{k}$xrays lying in the samplemore »
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Works referencing / citing this record:
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.