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Low operational current spin Hall nano-oscillators based on NiFe/W bilayers

机译：基于NiFe / W双层的低工作电流自旋霍尔纳米振荡器

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摘要

We demonstrate highly efficient spin Hall nano-oscillators (SHNOs) based on NiFe/β-W bilayers. Thanks to the very high spin Hall angle of β-W, we achieve more than a 60% reduction in the auto-oscillation threshold current compared to NiFe/Pt bilayers. The structural, electrical, and magnetic properties of the bilayers, as well as the microwave signal generation properties of the SHNOs, have been studied in detail. Our results provide a promising path for the realization of low-current SHNO microwave devices with highly efficient spin-orbit torque from β-W.
机译：我们展示了基于NiFe /β-W双层的高效自旋霍尔纳米振荡器（SHNOs）。由于具有极高的自旋霍尔角β-W，与NiFe / Pt双层相比，我们的自激振荡阈值电流降低了60％以上。已经详细研究了双层的结构，电和磁性能，以及SHNO的微波信号产生性能。我们的结果为实现低电流SHNO微波设备提供了一个有希望的途径，该设备具有来自β-W的高效自旋轨道转矩。

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  • 来源
    《Applied Physics Letters》 |2016年第24期|242402.1-242402.4|共4页
  • 作者

    Hamid Mazraati; Sunjae Chung; Afshin Houshang; Mykola Dvornik; Luca Piazza; Fatjon Qejvanaj; Sheng Jiang; Tuan Q. Le; Jonas Weissenrieder; Johan Akerman;

  • 作者单位

    NanOsc AB, Kista 164 40, Sweden,Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden;

    Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden,Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden;

    NanOsc AB, Kista 164 40, Sweden,Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden;

    Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden;

    Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden;

    NanOsc AB, Kista 164 40, Sweden,Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden;

    NanOsc AB, Kista 164 40, Sweden,Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden;

    Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden;

    Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden;

    NanOsc AB, Kista 164 40, Sweden,Department of Materials and Nanophysics, School of Information and Communication Technology, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden,Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden;

  • 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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  • 入库时间 2022-08-18 03:14:55

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