Reference : Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
Lu, X []
Zou, X []
Hinzke, D []
Liu, T []
Wang, Y []
Cheng, T []
Wu, J []
Ostler, Thomas mailto [Université de Liège - ULiège > Département de physique > Physique des matériaux et nanostructures >]
Cai, J []
Nowak, U []
Chantrell, R []
Zhai, Y []
Xu, Y []
Applied Physics Letters
American Institute of Physics
Yes (verified by ORBi)
[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
National Basic Research Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Jiangsu Shuangchuang Programme ; Natural Science Foundation of Jiangsu Province of China ; BeIPD-COFUND Fellowship Program at the University of Liège

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