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Experimental realization of two-dimensional artificial skyrmion crystals at room temperature

机译:室温下二维人工天敌离子晶体的实验实现

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摘要

We report the creation of an artificial skyrmion crystal, which is configurable reliably at room temperature. The samples are fabricated by embedding lithography-patterned arrays of micron-sized Co disks onto Co/Pt multilayer films that have perpendicular magnetic anisotropy. Kerr microscopy and magnetic force microscopy reveal that the disks are in the vortex state with controllable circulation. Via comparison of measured hysteresis loops and calculated ones, we find that the sample can be configured into either a skyrmion or a non-skyrmion state. The reproducible and stable skyrmion crystal at room temperature opens the door to direct exploration of their unique topological properties, which has deservedly caused a flurry of theoretical activity.
机译:我们报告了一种人造天rm离子晶体的创建,该晶体在室温下可可靠配置。通过将光刻图案化的微米级Co盘阵列嵌入具有垂直磁各向异性的Co / Pt多层膜上来制造样品。 Kerr显微镜和磁力显微镜表明,圆盘处于涡流状态,可控循环。通过比较测得的磁滞回线和计算出的磁滞回线,我们发现可以将样品配置为Skyrmion或非Skyrmion状态。在室温下可重现且稳定的sky烯离子晶体为直接探索其独特的拓扑性质打开了方便之门,这理应引起了一系列理论活动。

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  • 来源
    《Physical review》 |2014年第17期|174411.1-174411.5|共5页
  • 作者单位

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

    Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China;

    National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Collaborative Innovation Center of Advanced Microstructures, 22 Hankou Road, Nanjing 210093, People's Republic of China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    domain effects, magnetization curves, and hysteresis; magnetooptical effects;

    机译:磁畴效应;磁化曲线和磁滞;磁光效应;

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