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首页> 外文期刊>Journal of Applied Physics >Three terminal nano-oscillator based on domain wall pinning by track defect and anisotropy control
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Three terminal nano-oscillator based on domain wall pinning by track defect and anisotropy control

机译：基于域壁固定的三个终端纳米振荡器通过轨道缺陷和各向异性控制

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摘要

The proper understanding of the dynamical properties of magnetization collective modes is a cornerstone for future applications in spin-tronic devices based on the domain wall (DW) motion. In this work, through micromagnetic simulations and analytical calculations, we study the rotation of a DW pinned by a T-shaped defect on an anisotropic magnetic nanostripe. We show that the competition between the torques produced by the magnetostatic field generated by the T-shaped defect and the applied electric current makes the DW stop at a specific position along the track, and start to turn around the in-plane direction with a specific rotation frequency depending on anisotropy and current density. It is also shown that the distance between the DW position and the T-shaped structure position depends on the anisotropy constant of the nanostripe. Finally, it is proposed as an experimental setting considering that the DW rotation mode can be used to induce the rotation of magnetization of a magnetic nanodisc by a magnetic tunnel junction device. We have then shown that this experimental arrangement can be considered as a three-terminal nano-oscillator.
机译：正确理解磁化集体模式的动态特性是基于畴壁（DW）运动的旋转型器件中未来应用的基石。在这项工作中，通过微磁性模拟和分析计算，我们研究了在各向异性磁性纳米杆菌上通过T形缺陷固定的DW的旋转。我们表明，由T形缺陷和施加的电流产生的磁静电场产生的扭矩之间的竞争使得DW沿着轨道处的特定位置停止，并开始用特定的面内方向转动面内方向旋转频率取决于各向异性和电流密度。还示出了DW位置和T形结构位置之间的距离取决于纳米纳米的各向异性常数。最后，考虑到DW旋转模式可用于通过磁隧道结装置诱导磁纳米芯片磁化的旋转来诱导磁隧道结装置的实验设置。然后我们已经表明，该实验装置可以被认为是三终端纳米振荡器。

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  • 来源
    《Journal of Applied Physics》 |2020年第18期|183905.1-183905.8|共8页
  • 作者

    Oscar O. Toro; Sidiney G. Alves; Vagson L. Carvalho-Santos; Clodoaldo I. L. de Araujo;

  • 作者单位

    Departamento de Fisica Universidade Federal de Vicosa Vicosa 36570-900 Minas Gerais Brazil;

    Departamento de Estatistica Fisica e Matematica CAP Universidade Federal de Sao Joao det Rei 36420-000 Ouro Branco Minas Gerais Brazil;

    Departamento de Fisica Universidade Federal de Vicosa Vicosa 36570-900 Minas Gerais Brazil;

    Departamento de Fisica Universidade Federal de Vicosa Vicosa 36570-900 Minas Gerais Brazil;

  • 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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  • 正文语种 eng
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