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LU, Xangyang, ZOU, Xiao, HINZKE, Denise, LIU, Tao, WANG, Yichuan, CHENG, Tuyan, WU, Jing, OSTLER, Thomas, CAI, Jianwang, NOWAK, Ulrich, CHANTRELL, Roy, ZHAI, Ya and XU, Yongbing (2018). Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo. Applied Physics Letters, 113 (3), 032405.
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Abstract
Using the time-resolved magneto-optical Kerr effect method, helicity dependent all-optical magne- tization 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 HDAOS demonstrating a linear path for magnetization reversal.
| Item Type: | Article |
|---|---|
| Research Institute, Centre or Group - Does NOT include content added after October 2018: | Materials and Engineering Research Institute > Modelling Research Centre |
| Departments - Does NOT include content added after October 2018: | Faculty of Science, Technology and Arts > Department of Engineering and Mathematics |
| Identification Number: | https://doi.org/10.1063/1.5036720 |
| Page Range: | 032405 |
| Depositing User: | Thomas Ostler |
| Date Deposited: | 23 Jul 2018 12:07 |
| Last Modified: | 18 Mar 2021 03:56 |
| URI: | https://shura.shu.ac.uk/id/eprint/22051 |
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