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首页> 外文期刊>Journal of magnetism and magnetic materials >Interaction between magnetic molecules and two ferromagnetic electrodes of a magnetic tunnel junction (MTJ)
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Interaction between magnetic molecules and two ferromagnetic electrodes of a magnetic tunnel junction (MTJ)

机译：磁性隧道结（MTJ）磁性分子与两个铁磁电极之间的相互作用

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摘要

This paper focuses on Monte Carlo Simulations (MCS) to investigate the effects of variations in molecular exchange coupling strengths and nature between the magnetic molecules and ferromagnetic electrodes in cross-junction-shaped magnetic tunnel junction (MTJ) based molecular spintronics devices (MTJMSD). To encompass a wide range of futuristic molecular spintronics devices, we systematically studied the effect of a magnetic molecule analog coupling with two ferromagnetic electrodes. We studied three cases when molecules established: (ⅰ) Ferromagnetic couplings with two ferromagnetic electrodes, (ⅱ) Antiferromagnetic couplings with two electrodes, and (ⅲ) Ferromagnetic coupling with one electrode and antiferromagnetic coupling with another electrode. We varied the strength and nature of exchange coupling to study the temporal and spatial propagation of molecular coupling impact on two ferromagnetic electrodes. Our results showed that in the cases when molecular coupling strength was ～ 10% of the ferromagnetic electrode's Curie temperature, then 16 molecular analogs could influence the magnetic properties of 2,500 atoms above room temperature. This theoretical study is directly in agreement with the experimental observation of ～ 10,000 Single Molecular Magnet (SMM) channels controlling the magnetic and transport properties of microscopic cross-junction-shaped MTJ testbed above room temperature.
机译：本文的重点蒙特卡罗模拟（MCS）来调查变化的分子交换耦合在交叉结形磁隧道结（MTJ）基于分子自旋电子器件（MTJMSD）磁性分子和铁磁电极之间的优势和性质的影响。为包括宽范围的未来分子自旋电子器件，我们系统地研究磁分子模拟耦合的两个铁磁电极的效果。我们研究了三种情况分子成立：（ⅰ）铁磁耦合用两个铁磁性电极，（ⅱ）反铁磁耦合具有两个电极，以及（ⅲ）与铁磁一个电极和反铁磁性耦合与另一电极耦合。我们改变强度和交换耦合的性质研究的分子偶合冲击时间和空间传播的两个铁磁电极。我们的研究结果表明，在情况下，当分子的结合强度是铁磁性电极的居里温度的〜10％，然后16代分子的类似物可能影响2500个原子高于室温的磁特性。这个理论研究是直接与的〜万单分子磁铁（SMM）通道控制显微横结形MTJ的磁性质和输运性质测试平台高于室温的实验观察一致。

著录项

  • 来源
    《Journal of magnetism and magnetic materials》 |2021年第7期|167902.1-167902.8|共8页
  • 作者

    Marzieh Savadkoohi; Bishnu R. Dahal; Andrew Grizzle; Christopher DAngelo; Pawan Tyagi;

  • 作者单位

    Center for Nanotechnology Research and Education Mechanical Engineering University of the District of Columbia Washington DC 20008 USA;

    Center for Nanotechnology Research and Education Mechanical Engineering University of the District of Columbia Washington DC 20008 USA;

    Center for Nanotechnology Research and Education Mechanical Engineering University of the District of Columbia Washington DC 20008 USA;

    Center for Nanotechnology Research and Education Mechanical Engineering University of the District of Columbia Washington DC 20008 USA;

    Center for Nanotechnology Research and Education Mechanical Engineering University of the District of Columbia Washington DC 20008 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MTJ; SMM; Spintronics; Ferromagnetism; Tunnel barrier; Exchange coupling;

    机译：MTJ;SMM;闪蒸;铁磁性;隧道障碍;交换耦合;

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