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X-ray imaging of the dynamic magnetic vortex core deformation

Arne Vansteenkiste UGent, K.W. Chou, M. Weigand, M. Curcic, V. Sackmann, H. Stoll, T. Tyliszczak, G. Woltersdorf, C.H. Back and G. Schütz, et al. (2009) Nature Physics. 5(5). p.332-334
abstract
Magnetic thin-film square- or disk-shaped nanostructures with adequate dimensions exhibit a magnetic vortex state: the magnetisation vectors lie in the film plane and curl around the structure-centre. At the very centre of the vortex, a small, stable core exists where the magnetisation points either up or down. The discovery of an easy core reversal mechanism did not only open the possibility of using such systems as magnetic memories, but also initiated the fundamental investigation of the core switching mechanism itself. Theoretical modelling predicted that the reversal is mediated by the creation and annihilation of a vortex-antivortex pair, but experimental support has been lacking until now. We employed high-resolution time-resolved magnetic X-ray microscopy to experimentally reveal the first step of the reversal process: the dynamic deformation of the vortex core. Additionally, we have measured a critical vortex velocity above which reversal must occur. Both observations support the previously proposed reversal mechanism.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (letterNote)
publication status
published
subject
keyword
Magnetism, Nanostructures
journal title
Nature Physics
Nat. Phys.
volume
5
issue
5
pages
332 - 334
Web of Science type
Article
Web of Science id
000266257700010
JCR category
PHYSICS, MULTIDISCIPLINARY
JCR impact factor
15.491 (2009)
JCR rank
3/71 (2009)
JCR quartile
1 (2009)
ISSN
1745-2473
DOI
10.1038/NPHYS1231
language
English
UGent publication?
yes
classification
A1
copyright statement
I have retained and own the full copyright for this publication
id
664319
handle
http://hdl.handle.net/1854/LU-664319
date created
2009-05-25 12:17:17
date last changed
2009-09-07 15:24:13
@article{664319,
  abstract     = {Magnetic thin-film square- or disk-shaped nanostructures with adequate dimensions exhibit a magnetic vortex state: the magnetisation vectors lie in the film plane and curl around the structure-centre. At the very centre of the vortex, a small, stable core exists where the magnetisation points either up or down. The discovery of an easy core reversal mechanism did not only open the possibility of using such systems as magnetic memories, but also initiated the fundamental investigation of the core switching mechanism itself. Theoretical modelling predicted that the reversal is mediated by the creation and annihilation of a vortex-antivortex pair, but experimental support has been lacking until now. We employed high-resolution time-resolved magnetic X-ray microscopy to experimentally reveal the first step of the reversal process: the dynamic deformation of the vortex core. Additionally, we have measured a critical vortex velocity above which reversal must occur. Both observations support the previously proposed reversal mechanism.},
  author       = {Vansteenkiste, Arne and Chou, K.W. and Weigand, M. and Curcic, M. and Sackmann, V. and Stoll, H. and Tyliszczak, T. and Woltersdorf, G. and Back, C.H. and Sch{\"u}tz, G. and Van Waeyenberge, B.},
  issn         = {1745-2473},
  journal      = {Nature Physics},
  keyword      = {Magnetism,Nanostructures},
  language     = {eng},
  number       = {5},
  pages        = {332--334},
  title        = {X-ray imaging of the dynamic magnetic vortex core deformation},
  url          = {http://dx.doi.org/10.1038/NPHYS1231},
  volume       = {5},
  year         = {2009},
}

Chicago
Vansteenkiste, Arne, K.W. Chou, M. Weigand, M. Curcic, V. Sackmann, H. Stoll, T. Tyliszczak, et al. 2009. “X-ray Imaging of the Dynamic Magnetic Vortex Core Deformation.” Nature Physics 5 (5): 332–334.
APA
Vansteenkiste, Arne, Chou, K. W., Weigand, M., Curcic, M., Sackmann, V., Stoll, H., Tyliszczak, T., et al. (2009). X-ray imaging of the dynamic magnetic vortex core deformation. Nature Physics, 5(5), 332–334.
Vancouver
1.
Vansteenkiste A, Chou KW, Weigand M, Curcic M, Sackmann V, Stoll H, et al. X-ray imaging of the dynamic magnetic vortex core deformation. Nature Physics. 2009;5(5):332–4.
MLA
Vansteenkiste, Arne, K.W. Chou, M. Weigand, et al. “X-ray Imaging of the Dynamic Magnetic Vortex Core Deformation.” Nature Physics 5.5 (2009): 332–334. Print.