论文标题
在铁磁/防铁磁性双层中工程中的天际晶体从DM相互作用
Engineering a skyrmion crystal in ferromagnetic/antiferromagnetic bilayers free from the DM interaction
论文作者
论文摘要
从理论上讲，我们在双层三角晶格系统中提出了一种新的稳定机制，该机制由铁磁性和抗铁磁层组成。通过以互补的方式执行变异计算和蒙特卡洛模拟，我们发现铁磁和抗铁磁层之间的磁挫败感是有限的Q螺旋状态的来源，以及强层间层间偶联方案中的SKX的来源。我们还表明，挫败感与层间交换相互作用有关。更强的层间耦合倾向于使挫败感的影响更大，从而导致SKX的稳定。目前的结果不仅提供了一种在铁磁/抗铁磁域和异质结构中设计SKX的方法，而且还暗示了基于孔间挫败感的情况下SKX的可能性。
We theoretically propose a new stabilization mechanism of a skyrmion crystal (SkX) in a bilayer triangular lattice system consisting of the ferromagnetic and the antiferromagnetic layers. By performing variational calculations and Monte Carlo simulations in a complementary way, we find that a magnetic frustration between the ferromagnetic and antiferromagnetic layers is a source of a finite-Q spiral state and the SkX in the strong interlayer coupling regime. We also show that the degree of frustration is related to the interlayer exchange interaction. The stronger interlayer coupling tends to make the effect of frustration larger, which results in the stabilization of the SkX. The present results not only provide a way of engineering the SkX in the ferromagnetic/antiferromagnetic domain and heterostructure but also imply the possibility of the SkX based on interorbital frustration scenario.
