Publikation:

Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo

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2018

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Lu, Xianyang
Zou, Xiao
Liu, Tao
Wang, Yichuan
Wu, Jing
Ostler, Thomas A.
Cai, Jianwang
Xu, Yongbing
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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1omquoi6r3x717
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https://doi.org/10.1063/1.5036720
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Applied Physics Letters. 2018, 113(3), 032405. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.5036720

Zusammenfassung

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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ISO 690LU, 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: 10.1063/1.5036720
BibTex
@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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