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

Tools

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. [Article]

[+][-]

Documents

22051:510685
22051:513750

[+][-]

22051:510685

Preview

PDF
1.5036720.pdf - Published Version
Available under License All rights reserved.

Download (1MB) | Preview

22051:513750

[thumbnail of Ostler-RolesofHeatingAndHelicity(AM).pdf]

Preview

PDF
Ostler-RolesofHeatingAndHelicity(AM).pdf - Accepted Version
Available under License All rights reserved.

Download (1MB) | Preview

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.

More Information

Official URL:

https://aip.scitation.org/doi/10.1063/1.5036720

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

Page Range:

032405

Related URLs: