论文标题
Utrafast激光诱导的Skyrmion Lattices成核的非平衡加热路径
Non-equilibrium heating path for utrafast laser-induced nucleation of skyrmion lattices
论文作者
论文摘要
我们探索具有垂直磁各向异性的基于铁磁钴的三利码的Skyrmion Lattices的螺旋性独立的光诱导的光诱导的成核。使用原子自旋动力学模拟，我们表明高温激发，然后是镁滴及其非平衡松弛，通过具有特定持续时间和强度的超快激光激发访问，可以导致在室温下稳定的Skyrmion lattice稳定。外部磁场可以另外操纵成核窗口，拓扑密度和天际极性。我们的结果提供了对非零温度下的Skyrmionic激发的非平衡性质的洞察力，并在信息技术中使用了其他途径。
We explore the helicity-independent light-induced nucleation of skyrmion lattices in ferromagnetic cobalt-based trilayers with perpendicular magnetic anisotropy. Using Atomistic Spin Dynamics simulations, we show that a high temperature excitation followed by magnon drops and their non-equilibrium relaxation, accessed by an ultrafast laser excitation with specific duration and intensity, can lead to the generation of a skyrmion lattice stable at room temperature. The nucleation window, the topological density and the skyrmion polarity can be additionally manipulated by external magnetic fields. Our results provide insight into the non-equilibrium nature of skyrmionic excitations at non-zero temperatures and pave additional routes for their use in information technologies.
