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

被引：28

作者：

Lu, Xianyang ^{[1
,2
]}

Zou, Xiao ^{[1
]}

Hinzke, Denise ^{[3
]}

Liu, Tao ^{[4
]}

Wang, Yichuan ^{[1
,2
]}

Cheng, Tuyuan ^{[5
]}

Wu, Jing ^{[1
,2
]}

Ostler, Thomas A. ^{[6
,7
]}

Cai, Jianwang ^{[4
]}

Nowak, Ulrich ^{[3
]}

Chantrell, Roy W. ^{[1
]}

Zhai, Ya ^{[5
,8
]}

Xu, Yongbing ^{[2
,5
]}

机构：

[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[2] Nanjing Univ, York Nanjing Int Joint Ctr Spintron, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[3] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

[4] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[5] Univ York, Dept Elect, Spintron & Nanodevice Lab, York YO10 5DD, N Yorkshire, England

[6] Sheffield Hallam Univ, Fac Arts Comp Engn & Sci, Sheffield S1 1WB, S Yorkshire, England

[7] Univ Liege, Dept Phys, B-4000 Liege, Belgium

[8] Southeast Univ, Dept Phys, Nanjing 210096, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2018年 / 113卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.5036720

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. Published by AIP Publishing.

引用

页数：5

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