论文标题
使用Joule加热的CO/Ni/Pt多层的节能生成Skyrmion阶段
Energy-efficient generation of skyrmion phases in Co/Ni/Pt-based multilayers using Joule heating
论文作者
论文摘要
我们研究了电流脉冲对一系列CO/Ni/PT的多层型在Skyrmion形成的影响。传输X射线显微镜表明，通过在$τ$ = 50 $ = 50 $ $ $ s和j = 1.7x10 $^1 $^0 $ a/m $^2 $的订单上应用电流脉冲和电流密度，在$ $ $ $ $ $ $ $ $ $ $ $ _ 0 $ HZ = 50 mt = 50 mt，stripe-tope-skyrmion tronflastation ins Att Act Act中。在包括零磁场在内的各种磁场上，天空保持稳定。然后，天空在包括零场在内的广泛磁场上保持稳定。我们主要将转化归因于〜125 K的电流诱导的焦点加热。使用薄薄的稀有地步间隔仪大幅度降低脉冲持续时间，电流密度和磁场为25 $ $ s，2.4x10 $^9 $ a/m $^2 $^2 $^2 $^2 $ 27m，从而减少磁矩和垂直方向异性。这些发现表明，能量输入允许在广泛的材料中形成天际阶段，并且可以调整材料特性以产生更节能的访问到Skyrmion阶段。
We have studied the effects of electrical current pulses on skyrmion formation in a series of Co/Ni/Pt-based multilayers. Transmission X-ray microscopy reveals that by applying electrical current pulses of duration and current density on the order of $τ$=50 $μ$s and j=1.7x10$^1$$^0$ A/m$^2$, respectively, in an applied magnetic field of $μ$$_0$Hz=50 mT, stripe-to-skyrmion transformations are attained. The skyrmions remain stable across a wide range of magnetic fields, including zero field. The skyrmions then remain stable across a wide range of magnetic fields, including zero field. We primarily attribute the transformation to current-induced Joule heating on the order of ~125 K. Reducing the magnetic moment and perpendicular anisotropy using thin rare-earth spacers dramatically reduces the pulse duration, current density, and magnetic field necessary to 25 $μ$s, 2.4x10$^9$ A/m$^2$, and 27 mT, respectively. These findings show that energetic inputs allow for the formation of skyrmion phases in a broad class of materials and that material properties can be tuned to yield more energy-efficient access to skyrmion phases.
