论文标题
观察磁性隧道连接中的磁液滴
Observation of Magnetic Droplets in Magnetic Tunnel Junctions
论文作者
论文摘要
磁液滴是一类高度非线性磁动力学的孤子，可以在纳米骨骼旋转旋转纳米振荡器中成核和稳定，在那里它们大大增加了微波炉输出功率。在这里，我们在实验中证明了磁性隧道连接（MTJ）中的磁液滴。与铁磁共振模式相比，液滴成核的功率增加了300倍以上。液滴的成核和稳定性归因于全垂体MTJ中的双层自由层结构，该结构提供了低张-LI扭矩和高钉场。我们的结果在液滴的基本研究中可以更好地进行电敏感性，并表明可以在基于MTJ的应用中使用液滴。
Magnetic droplets, a class of highly non-linear magnetodynamical solitons, can be nucleated and stabilized in nanocontact spin-torque nano-oscillators where they greatly increase the microwave output power. Here, we experimentally demonstrate magnetic droplets in magnetic tunnel junctions (MTJs). The droplet nucleation is accompanied by a power increase of over 300 times compared to its ferromagnetic resonance modes. The nucleation and stabilization of droplets are ascribed to the double-CoFeB free layer structure in the all-perpendicular MTJ which provides a low Zhang-Li torque and a high pinning field. Our results enable better electrical sensitivity in the fundamental studies of droplets and show that the droplets can be utilized in MTJ-based applications.
