发表机构
Universität Göttingen; Max Planck Institute for Multidisciplinary Sciences; University of Augsburg; TU Wien(哥廷根大学; 马克斯·普朗克多学科科学研究所; 奥格斯堡大学; 维也纳工业大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本研究通过激光诱导在无斯格明子基态的Co/Ni多层膜中产生拓扑荷高达|Q|=3的亚稳态(反)斯格明子,并利用激发通量和外磁场调控其数量与类型,为超快自旋电子学提供新途径。
AI 中文摘要
超快产生和操控拓扑非平凡的自旋物体有望为自旋电子学应用带来巨大潜力。在此,我们展示了从Co/Ni多层膜的饱和磁化态中激光诱导成核拓扑荷高达|Q|=3的斯格明子和反斯格明子,该多层膜本身并不具有斯格明子基态。由此产生的自旋物体构型构成了一种亚稳态的、热力学上隐藏的磁态。我们通过激发通量和外部垂直磁场来控制自旋物体的数量和类型。
英文摘要
Ultrafast creation and manipulation of topologically non-trivial spin objects promises significant potential for spintronic applications. Here, we demonstrate laser-induced nucleation of skyrmions and antiskyrmions with topological charge up to $|Q|=3$ from the saturated magnetization state of a Co/Ni-multilayer which does not intrinsically host a skyrmionic ground state. The resulting configuration of spin objects thus constitutes a metastable, thermodynamically hidden magnetic state. We control the number and type of spin objects by the excitation fluence and the external out-of-plane magnetic field.
Comments10 pages, 7 figures