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Interface-induced optical effects in magnetic two- and three-layer films

机译：磁性双层和三层膜中的界面诱导的光学效应

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摘要

Multilayer planar nanostructures formed by ferromagnetic and heavy metals can reveal unique properties governed by their composition and geometry. The main role in their formation belongs to the interfacial spin-orbit interaction leading to specific magnetic distributions and behavior at the nanoscale. Here we present a complex analysis of magneto-optical effects in nanolayered films composed of different combinations of cobalt nanolayers with tantalum and platinum ones. Magnetic force microscopy studies confirm inhomogeneous magnetization distribution in {Ta,Pt}/Co and {Ta,Pt}/Co/{Ta,Pt} films, which can be described in terms of magnetic ripple domain or chiral structures. Experiments on the Brillouin light scattering directly confirm the appearance of the interface Dzyaloshinskii-Moriya interaction in the studied films, the effect increases with the structural asymmetry. Finally, interface-sensitive second harmonic generation (SHG) reveals odd in magnetic field SHG intensity effect for the longitudinal geometry of the applied dc magnetic field that is absent for homogeneously magnetized structures.
机译：由铁磁性和重金属形成的多层平面纳米结构可以揭示由其组成和几何形状控制的独特性能。其形成中的主要作用属于界面旋转轨道相互作用，导致纳米级的特定磁性分布和行为。在这里，我们对由钽和铂钴纳米组合的不同组合组成的纳米层膜中的磁光效应复杂分析。磁力显微镜研究确认在{ta，pt} / co和{ta，pt} / co / co / co / {ta，pt}膜中的不均匀磁化分布，其可以在磁纹波结构域或手性结构方面描述。 Brillouin光散射的实验直接确认了界面的界面Dzyaloshinskii-Moriya在研究中的膜中的相互作用，效果随着结构不对称的增加而增加。最后，界面敏感的第二谐波产生（SHG）揭示了用于均匀磁化结构的纵向几何形状的磁场SHG强度效应的奇数。

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  • 来源
    《Journal of magnetism and magnetic materials》 |2021年第6期|167780.1-167780.6|共6页
  • 作者

    I.A. Kolmychek; V.V. Radovskaya; E.A. Mamonov; A.I. Maydykovskiy; A.V. Sadovnikov; S.E. Sheshukova; S.A. Nikitov; M.P. Temiryazeva; N.S. Gusev; A.A. Fraerman; T. V. Murzina;

  • 作者单位

    Lomonosov Moscow State University Department of Physics Leninskie Gory 119991 Moscow Russia;

    Lomonosov Moscow State University Department of Physics Leninskie Gory 119991 Moscow Russia;

    Lomonosov Moscow State University Department of Physics Leninskie Gory 119991 Moscow Russia;

    Lomonosov Moscow State University Department of Physics Leninskie Gory 119991 Moscow Russia;

    Laboratory of Magnetic Metamaterials Saratov State University Russia 410012 Astrakhanskaya str. 83 Russia;

    Laboratory of Magnetic Metamaterials Saratov State University Russia 410012 Astrakhanskaya str. 83 Russia;

    Laboratory of Magnetic Metamaterials Saratov State University Russia 410012 Astrakhanskaya str. 83 Russia;

    Kotel'nikov Institute of Radioengineering and Electronics of RAS Fryazino Branch Vvedensky Sq. 1 Fryazino 141190 Russia;

    Institute for Physics of Microstructures RAS GSP-105 Nizhny Novgorod 603950 Russia;

    Institute for Physics of Microstructures RAS GSP-105 Nizhny Novgorod 603950 Russia;

    Lomonosov Moscow State University Department of Physics Leninskie Gory 119991 Moscow Russia;

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  • 正文语种 eng
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  • 关键词

    Pt/Co/Ta and Pt/Co/Pt nanolayered structure; Asymmetric Brillouin light scattering; Optical second harmonic generation;

    机译：PT / CO / TA和PT / CO / PT纳米结构;不对称布里渊光散射;光学二次谐波生成;

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