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Imaging Ultrafast Demagnetization Dynamics after a Spatially Localized Optical Excitation

Schmising, C. von Korff; Pfau, B.; Schneider, M.; Guenther, C. M.; Giovannella, M.; Perron, J.; Vodungbo, B.; Mueller, L.; Capotondi, F. and Pedersoli, E., et al. (2014) In Physical Review Letters 111(21).
Abstract
Ultrashort, coherent x-ray pulses of a free-electron laser are used to holographically image the magnetization dynamics within a magnetic domain pattern after creation of a localized excitation via an optical standing wave. We observe a spatially confined reduction of the magnetization within a couple of hundred femtoseconds followed by its slower recovery. Additionally, the experimental results show evidence of a spatial evolution of magnetization, which we attribute to ultrafast transport of nonequilibrium spin-polarized electrons for early times and to a fluence-dependent remagnetization rate for later times.
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publication status
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Physical Review Letters
volume
111
issue
21
publisher
American Physical Society
external identifiers
  • wos:000336842800020
  • scopus:84901936825
ISSN
1079-7114
DOI
10.1103/PhysRevLett.112.217203
language
English
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yes
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ce37c7ec-6f0f-4d96-901c-0b91db13ba62 (old id 4549221)
date added to LUP
2014-07-17 09:24:47
date last changed
2017-11-19 03:24:33
@article{ce37c7ec-6f0f-4d96-901c-0b91db13ba62,
  abstract     = {Ultrashort, coherent x-ray pulses of a free-electron laser are used to holographically image the magnetization dynamics within a magnetic domain pattern after creation of a localized excitation via an optical standing wave. We observe a spatially confined reduction of the magnetization within a couple of hundred femtoseconds followed by its slower recovery. Additionally, the experimental results show evidence of a spatial evolution of magnetization, which we attribute to ultrafast transport of nonequilibrium spin-polarized electrons for early times and to a fluence-dependent remagnetization rate for later times.},
  articleno    = {217203},
  author       = {Schmising, C. von Korff and Pfau, B. and Schneider, M. and Guenther, C. M. and Giovannella, M. and Perron, J. and Vodungbo, B. and Mueller, L. and Capotondi, F. and Pedersoli, E. and Mahne, N. and Luening, J. and Eisebitt, Stefan},
  issn         = {1079-7114},
  language     = {eng},
  number       = {21},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Imaging Ultrafast Demagnetization Dynamics after a Spatially Localized Optical Excitation},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.112.217203},
  volume       = {111},
  year         = {2014},
}