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Coupled vortex oscillations in spatially separated permalloy squares

Andreas Vogel, Thomas Kamionka, Michael Martens, Andre Drews, Kang Wei Chou, Tolek Tyliszczak, Hermann Stoll, Bartel Van Waeyenberge UGent and Guido Meier (2011) PHYSICAL REVIEW LETTERS. 106(13).
abstract
We experimentally study the magnetization dynamics of pairs of micron-sized permalloy squares coupled via their stray fields. The trajectories of the vortex cores in the Landau-domain patterns of the squares are mapped in real space using time-resolved scanning transmission x-ray microscopy. After excitation of one of the vortex cores with a short magnetic-field pulse, the system behaves like coupled harmonic oscillators. The coupling strength depends on the separation between the squares and the configuration of the vortex-core polarizations. Considering the excitation via a rotating in-plane magnetic field, it can be understood that only a weak response of the second vortex core is observed for equal core polarizations.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
DOTS
journal title
PHYSICAL REVIEW LETTERS
Phys. Rev. Lett.
volume
106
issue
13
article_number
137201
pages
4 pages
Web of Science type
Article
Web of Science id
000288901200024
JCR category
PHYSICS, MULTIDISCIPLINARY
JCR impact factor
7.37 (2011)
JCR rank
5/82 (2011)
JCR quartile
1 (2011)
ISSN
0031-9007
DOI
10.1103/PhysRevLett.106.137201
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1245272
handle
http://hdl.handle.net/1854/LU-1245272
date created
2011-05-27 11:25:37
date last changed
2011-06-10 12:42:23
@article{1245272,
  abstract     = {We experimentally study the magnetization dynamics of pairs of micron-sized permalloy squares coupled via their stray fields. The trajectories of the vortex cores in the Landau-domain patterns of the squares are mapped in real space using time-resolved scanning transmission x-ray microscopy. After excitation of one of the vortex cores with a short magnetic-field pulse, the system behaves like coupled harmonic oscillators. The coupling strength depends on the separation between the squares and the configuration of the vortex-core polarizations. Considering the excitation via a rotating in-plane magnetic field, it can be understood that only a weak response of the second vortex core is observed for equal core polarizations.},
  articleno    = {137201},
  author       = {Vogel, Andreas and Kamionka, Thomas and Martens, Michael and Drews, Andre and Chou, Kang Wei and Tyliszczak, Tolek and Stoll, Hermann and Van Waeyenberge, Bartel and Meier, Guido},
  issn         = {0031-9007},
  journal      = {PHYSICAL REVIEW LETTERS},
  keyword      = {DOTS},
  language     = {eng},
  number       = {13},
  pages        = {4},
  title        = {Coupled vortex oscillations in spatially separated permalloy squares},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.106.137201},
  volume       = {106},
  year         = {2011},
}

Chicago
Vogel, Andreas, Thomas Kamionka, Michael Martens, Andre Drews, Kang Wei Chou, Tolek Tyliszczak, Hermann Stoll, Bartel Van Waeyenberge, and Guido Meier. 2011. “Coupled Vortex Oscillations in Spatially Separated Permalloy Squares.” Physical Review Letters 106 (13).
APA
Vogel, A., Kamionka, T., Martens, M., Drews, A., Chou, K. W., Tyliszczak, T., Stoll, H., et al. (2011). Coupled vortex oscillations in spatially separated permalloy squares. PHYSICAL REVIEW LETTERS, 106(13).
Vancouver
1.
Vogel A, Kamionka T, Martens M, Drews A, Chou KW, Tyliszczak T, et al. Coupled vortex oscillations in spatially separated permalloy squares. PHYSICAL REVIEW LETTERS. 2011;106(13).
MLA
Vogel, Andreas, Thomas Kamionka, Michael Martens, et al. “Coupled Vortex Oscillations in Spatially Separated Permalloy Squares.” PHYSICAL REVIEW LETTERS 106.13 (2011): n. pag. Print.