Accelerating the laser-induced demagnetization of a ferromagnetic film by antiferromagnetic order in an adjacent layer

I. Kumberg; E. Golias; N. Pontius; R. Hosseinifar; K. Frischmuth; I. Gelen; T. Shinwari; S. Thakur; C. Schuessler-Langeheine; P. M. Oppeneer; W. Kuch

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Accelerating the laser-induced demagnetization of a ferromagnetic film by antiferromagnetic order in an adjacent layer

机译：通过在相邻层中通过反铁磁序列加速激光诱导的铁磁膜的去磁

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We study the ultrafast demagnetization of Ni/NiMn and Co/NiMn ferromagnetic/antiferromagnetic bilayer systems after excitation by a laser pulse. We probe the ferromagnetic order of Ni and Co using magnetic circular dichroism in time-resolved pump-probe resonant x-ray reflectivity. Tuning the sample temperature across the antiferromagnetic ordering temperature of the NiMn layer allows us to investigate effects induced by the magnetic order of the latter. The presence of antiferromagnetic order in NiMn speeds up the demagnetization of the ferromagnetic layer, which is attributed to bidirectional laser-induced superdiffusive spin currents between the ferromagnetic and the antiferromagnetic layer.

机译：通过激光脉冲在激发之后研究Ni / Nimn和Co / Nimn铁磁/反铁磁双层系统的超快退缩。我们在时间分辨泵探针谐振X射线反射率下探测Ni和Co的铁磁顺序。调节云层层的反铁磁性排序温度上的采样温度允许我们研究由后者的磁场引起的效果。 NiMn中的反铁磁性顺序的存在加速了铁磁层的去磁，其归因于铁磁和反铁磁层之间的双向激光诱导的超光型自旋电流。

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《Physical review.B.Condensed matter and materials physics》 |2020年第21期|214418.1-214418.8|共8页
作者
I. Kumberg; E. Golias; N. Pontius; R. Hosseinifar; K. Frischmuth; I. Gelen; T. Shinwari; S. Thakur; C. Schuessler-Langeheine; P. M. Oppeneer; W. Kuch;
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Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Helmholtz-Zentrum Berlin fuer Materialien und Energie Albert-Einstein-Strasse 15 12489 Berlin Germany;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

Helmholtz-Zentrum Berlin fuer Materialien und Energie Albert-Einstein-Strasse 15 12489 Berlin Germany;

Department of Physics and Astronomy Uppsala University Box 516 SE-75120 Uppsala Sweden;

Institut fuer Experimentalphysik Freie Universitaet Berlin Arnimallee 14 14195 Berlin Germany;

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1. Laser-induced ultrafast demagnetization in layered GdFeCo films [J] . Tetsuya Sato, Ryutaro Shimizu, Shingo Toriumi, 日本磁気学会学術講演概要集 . 2012,第36期

机译：层状GdFeCo薄膜中的激光诱导超快退磁
2. Oriented CoFe2O4/CoO Nanocomposite Films from Layered Double Hydroxide Precursor Films by Calcination: Ferromagnetic Nanoparticles Embedded in an Antiferromagnetic Matrix for Beating the Superparamagnetic Limit [J] . Xiaofei Zhao, Yingchao Zhang, Sailong Xu The journal of physical chemistry, C. Nanomaterials and interfaces . 2012,第9期

机译：分层双氢氧化物前体薄膜通过煅烧定向的CoFe2O4 / CoO纳米复合薄膜：嵌入反铁磁基体中的铁磁纳米颗粒可克服超顺磁极限
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机译：具有成分梯度铁磁层的铁磁/反铁磁薄膜中的应变驱动分数自发交换偏压
4. ESR studies of a spin-1/2 ferromagnetic-ferromagnetic-antiferromagnetic-antiferromagnetic tetramer chain [C] . Masayuki Hagiwara Asia Pacific Electron Paramagnetic Resonance/Electron Spin Resonance Symposium . 2002

机译：旋转1/2铁磁 - 铁磁 - 反铁磁性四聚体链的ESR研究
5. Perpendicular exchange bias in ferromagnetic/antiferromagnetic multilayers and magnetization switching. [D] . Xing, Hao. 2009

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6. Induced high-temperature ferromagnetism by structural phase transitions in strained antiferromagnetic γ-Fe50Mn50 epitaxial films [O] . Younghun Hwang, Sungyoul Choi, Jeongyong Choi, -1

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7. Field driven ferromagnetic phase nucleation and propagation in antiferromagnetically coupled multilayer films with perpendicular anisotropy [O] . T. Hauet, C. M. Günther, O. Hovorka, 2008

机译：具有垂直各向异性的防铁磁体耦合多层膜中的场驱动的铁磁相成核和繁殖

Accelerating the laser-induced demagnetization of a ferromagnetic film by antiferromagnetic order in an adjacent layer

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