Imaging Ultrafast Demagnetization Dynamics after a Spatially Localized Optical Excitation
(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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https://lup.lub.lu.se/record/4549221
- author
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 111
- issue
- 21
- article number
- 217203
- publisher
- American Physical Society
- external identifiers
-
- wos:000336842800020
- scopus:84901936825
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.112.217203
- language
- English
- LU publication?
- yes
- id
- ce37c7ec-6f0f-4d96-901c-0b91db13ba62 (old id 4549221)
- date added to LUP
- 2016-04-01 11:15:39
- date last changed
- 2022-02-25 17:45:25
@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.}}, 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}}, doi = {{10.1103/PhysRevLett.112.217203}}, volume = {{111}}, year = {{2014}}, }