论文标题
小公园的效应受磁性纳米结构的影响，具有平面外磁化的小公园效应，由带有平面磁化的磁性纳米结构支配
Little-Parks Effect Governed by Magnetic Nanostructures with Out-of-Plane Magnetization Little-Parks Effect Governed by Magnetic Nanostructures with Out-of-Plane Magnetization
论文作者
论文摘要
Little-Parks效应超导临界温度中的振荡作为磁场的函数。该效果与样品的几何形状有关。在这项工作中，我们表明，通过磁性纳米结构垂直磁化可以增强和操纵这种效果。这些磁性纳米人会产生足够强度的杂散场，以产生超导涡流 - 抗差对。因此，L-P效应偏离了通常的几何限制，这是由于局部磁性杂散场与超导涡流之间的相互作用所致。此外，我们将结果与低丝磁场样品（即与磁性涡流状态的点）进行了比较，以显示L-P效应的增强如何通过纳米模特有效尺寸的增量来解释。
Little-Parks effect names the oscillations in the superconducting critical temperature as a function of the magnetic field. This effect is related to the geometry of the sample. In this work, we show that this effect can be enhanced and manipulated by the inclusion of magnetic nanostructures with perpendicular magnetization. These magnetic nanodots generate stray fields with enough strength to produce superconducting vortex-antivortex pairs. So that, the L-P effect deviation from the usual geometrical constrictions is due to the interplay between local magnetic stray fields and superconducting vortices. Moreover, we compare our results with a low-stray field sample (i.e. with the dots in magnetic vortex state) showing how the enhancement of the L-P effect can be explained by an increment of the effective size of the nanodots.
