Article (Scientific journals)
Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
Lu, X; Zou, X; Hinzke, D et al.
2018In Applied Physics Letters, 113, p. 032405
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Abstract :
[en] Using the time-resolved magneto-optical Kerr effect method, helicity-dependent all-optical magnetization switching (HD-AOS) is observed in ferrimagnetic TbFeCo films. Our results reveal the individual roles of the thermal and nonthermal effects after a single circularly polarized laser pulse. The evolution of this ultrafast switching occurs over different time scales, and a defined magnetization reversal time of 460 fs is shown—the fastest ever observed. Micromagnetic simulations based on a single macro-spin model, taking into account both heating and the inverse Faraday effect, are performed which reproduce HD-AOS demonstrating a linear path for magnetization reversal. Published
Disciplines :
Physics
Author, co-author :
Lu, X
Zou, X
Hinzke, D
Liu, T
Wang, Y
Cheng, T
Wu, J
Ostler, Thomas ;  Université de Liège - ULiège > Département de physique > Physique des matériaux et nanostructures
Cai, J
Nowak, U
Chantrell, R
Zhai, Y
Xu, Y
More authors (3 more) Less
Language :
English
Title :
Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
Publication date :
18 July 2018
Journal title :
Applied Physics Letters
ISSN :
0003-6951
eISSN :
1077-3118
Publisher :
American Institute of Physics, United States - New York
Volume :
113
Pages :
032405
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
National Basic Research Program of China
National Key Research and Development Program of China
NSCF - National Natural Science Foundation of China [CN]
Jiangsu Shuangchuang Programme
Natural Science Foundation of Jiangsu Province of China
BeIPD-COFUND Fellowship Program at the University of Liège
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