Publikation: Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
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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.
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LU, Xianyang, Xiao ZOU, Denise HINZKE, Tao LIU, Yichuan WANG, Jing WU, Thomas A. OSTLER, Jianwang CAI, Ulrich NOWAK, Yongbing XU, 2018. Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo. In: Applied Physics Letters. 2018, 113(3), 032405. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.5036720BibTex
@article{Lu2018-07-16Roles-43048, year={2018}, doi={10.1063/1.5036720}, title={Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo}, number={3}, volume={113}, issn={0003-6951}, journal={Applied Physics Letters}, author={Lu, Xianyang and Zou, Xiao and Hinzke, Denise and Liu, Tao and Wang, Yichuan and Wu, Jing and Ostler, Thomas A. and Cai, Jianwang and Nowak, Ulrich and Xu, Yongbing}, note={Article Number: 032405} }
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