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Investigation of self-nucleated skyrmion states in the ferromagnetic/nonmagnetic multilayer dot

机译：对铁磁/非磁性多层点的自核次幂阶段的对自我核化次幂的调查

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摘要

Understanding the stability of magnetic textures in multilayer patterned dots would constitute a significant step toward skyrmion-based applications. Here, we report the observation of skyrmions in patterned nanodots composed of multilayers. We examine the stabilization of various magnetic states such as single-domain states, skyrmion states, horseshoe-like domain structures, and worm-like domain structures in submicrometer dots (diameters 150-525 nm). Dots are fabricated from Pt/Co/Au multilayer structures that exhibit the interfacial Dzyaloshinskii-Moriya interaction and perpendicular magnetic anisotropy. In particular, we show that a stack of six repetitions of Pt/Co/Au layers suffices to stabilize the skyrmion state inside a dot at room temperature. A micromagnetic simulation determines the regime of skyrmion stability. The results reveal a correlation between the magnetic-force microscopy measurements and the micromagnetic simulation. Furthermore, we explain the development of the magnetic state with increasing dot diameter. We envision that nanopatterning of multilayer magnetic films could serve as a versatile way of creating magnetic skyrmion states.
机译：了解多层图案点的磁性纹理的稳定性将构成涉及基于Skyrmion的应用的重要步骤。在这里，我们报告了由多层组成的图案纳米蛋白中的臭鼬观察。我们检查各种磁力状态的稳定，如单一领域状态，斯科替换状态，马蹄形域结构，以及潜水仪点（直径150-525nm）中的蠕虫状域结构。点由Pt / Co / Au多层结构制成，其表现出界面Dzyaloshinskii-moriya相互作用和垂直磁各向异性。特别地，我们表明，六个重复的PT / CO / AU层的堆叠足以使室温下的点内的速度状态稳定。微磁性仿真决定了潜水线稳定性的制度。结果揭示了磁力显微镜测量与微磁性模拟之间的相关性。此外，我们解释了随着点直径增加的磁状态的发展。我们设想多层磁性薄膜的纳米透明理由可以用作产生磁性扼杀态态的多功能方式。

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  • 来源
    《Applied Physics Letters》 |2021年第21期|212409.1-212409.5|共5页
  • 作者

    Iu. V. Vetrova; M. Zelent; J. Soltys; V. A. Gubanov; A. V. Sadovnikov; T. Scepka; J.Derer; R. Stoklas; V. Cambel; M. Mruczkiewicz;

  • 作者单位

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia;

    Faculty of Physics Adam Mickiewicz University in Poznan Institute of Spintronics and Quantum Information ul. Uniwersytetu Poznanskiego 2 Poznan PL-61-614 Poland;

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia;

    Saratov State University Astrakhanskaya Street 83 Saratov 410012 Russian Federation;

    Saratov State University Astrakhanskaya Street 83 Saratov 410012 Russian Federation;

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia;

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia;

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia;

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia;

    Institute of Electrical Engineering Slovak Academy of Sciences Dubravska cesta 9 SK-841-04 Bratislava Slovakia Centre For Advanced Materials Application CEMEA Slovak Academy of Sciences Dubravska cesta 9 84511 Bratislava Slovakia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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