Energy exchange dependent transient ferromagnetic like state of ultrafast magnetization dynamics

Gao, Shihan; Liu, Donglin; Zheng, Taotao; Ostler, Thomas; Chantrell, Roy; Xu, Chudong

Abstract

The study of laser-induced ultrafast magnetization dynamics is crucial for the development of information recording technology. Due to the complex mechanism, there is still a lack of comprehensive understanding for ultrafast magnetization dynamics. As an essential stage of laser-induced ultrafast magnetization switching process, the transient ferromagnetic like state (TFLS), has attracted much attention. Different from other studies on TFLS through the difference of magnetization dynamics between rare-earth and transition-metal, our study mainly focuses on the influence of energy injection and relaxation on TFLS in the process of ultrafast magnetization dynamics. The influence of various parameters on the formation of energy exchange dependent TFLS is studied. The results of simulation well support our view. Understanding the mechanism behind the TFLS is of great significance to promote the application of laser-induced ultrafast magnetization switching.

Citation

Gao, S., Liu, D., Zheng, T., Ostler, T., Chantrell, R., & Xu, C. (2022). Energy exchange dependent transient ferromagnetic like state of ultrafast magnetization dynamics. New Journal of Physics, 24(10), Article 103013. https://doi.org/10.1088/1367-2630/ac95ba

• Journal Article Type: Article
• Acceptance Date: Sep 28, 2022
• Online Publication Date: Oct 13, 2022
• Publication Date: Oct 13, 2022
• Deposit Date: Oct 14, 2022
• Publicly Available Date: Oct 17, 2022
• Journal: New Journal of Physics
• Print ISSN: 1367-2630
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 24
• Issue: 10
• Article Number: 103013
• DOI: https://doi.org/10.1088/1367-2630/ac95ba
• Keywords: Optics; Ultrafast laser; Ultrafast magnetic recording
• Public URL: https://hull-repository.worktribe.com/output/4094941