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Double magnetic tunnel junctions with cross-magnetization configurations for electrical detection of domain-wall structures

机译:具有交叉磁化配置的双磁隧道结,用于电检测畴壁结构

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摘要

A device consisting of double magnetic tunnel junctions with cross-magnetization configurations is proposed to enable simultaneous electrical detection of both the structure and motion of a domain-wall (DW). Operation of this device has been confirmed through micromagnetic simulation. Owing to the cross-magnetization configurations, two types of DW structure formed in a ferromagnetic wire were clearly identified: a transverse wall (TW) in which the magnetization at the center of the wall is directed transversely to the wire axis and a vortex wall (VW) in which the magnetization circulates in the plane around a small perpendicular vortex core. In addition to the structural difference between TW and VW, the velocity of the DW motion was detected through the time response of the tunneling magnetoresistance.
机译:提出了一种由具有交叉磁化配置的双磁性隧道结组成的设备,以实现对畴壁(DW)的结构和运动的同时电检测。该设备的运行已通过微磁仿真得到证实。由于具有交叉磁化结构,因此可以清楚地识别出在铁磁线中形成的两种DW结构:横壁(TW),其壁中心的磁化方向垂直于线轴;涡流壁( (VW),其中磁化强度在围绕小的垂直涡流核的平面内循环。除了TW和VW之间的结构差异外,还通过隧穿磁阻的时间响应来检测DW运动的速度。

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  • 来源
    《Applied Physicsletters》 |2009年第1期|012502.1-012502.3|共3页
  • 作者单位

    Division of Electronics for Informatics, Hokkaido University, Sapporo 060-0814, Japan;

    Division of Electronics for Informatics, Hokkaido University, Sapporo 060-0814, Japan;

    Division of Electronics for Informatics, Hokkaido University, Sapporo 060-0814, Japan;

    Division of Electronics for Informatics, Hokkaido University, Sapporo 060-0814, Japan;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
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