论文标题
量身定制的通量固定在超导体/铁磁性多层中，具有工程磁性域形态，从条纹到天空
Tailored flux pinning in superconductor/ferromagnet multilayers with engineered magnetic domain morphology from stripes to skyrmions
论文作者
论文摘要
超导体/铁磁铁（S/F）杂交系统显示出有趣的磁通轨道行为，这些行为是由于两个成分之间的性质转移而产生的。例如，可以通过铁磁纹理通过固定超导涡流将磁性内存从F传递到S。量身定制这种诱发行为的能力对于扩大其应用范围很重要。在这里，我们表明工程F磁化逆转允许调整涡旋固定（和内存）效果的强度以及它们出现的场范围。这是通过使用磁性多层将CO薄膜与不同的重金属（Ru，ir，pt）结合的磁性多层完成的。通过选择图层的材料，厚度和堆叠顺序，我们可以设计特征性域的大小和形态，从平面外磁条域到较小的磁性天空。这些变化强烈影响磁通特性。通过将实验结果与磁性固定模型进行比较，可以确定基本机制。
Superconductor/Ferromagnet (S/F) hybrid systems show interesting magneto-transport behaviors that result from the transfer of properties between both constituents. For instance, magnetic memory can be transferred from the F into the S through the pinning of superconducting vortices by the ferromagnetic textures. The ability to tailor this type of induced behavior is important to broaden its range of applications. Here we show that engineering the F magnetization reversal allows tuning the strength of the vortex pinning (and memory) effects, as well as the field range in which they appear. This is done by using magnetic multilayers in which Co thin films are combined with different heavy metals (Ru, Ir, Pt). By choosing the materials, thicknesses, and stacking order of the layers, we can design the characteristic domain size and morphology, from out-of-plane magnetized stripe domains to much smaller magnetic skyrmions. These changes strongly affect the magneto-transport properties. The underlying mechanisms are identified by comparing the experimental results to a magnetic pinning model.
