论文标题
界面相挫折稳定了非常规的天际晶体
Interfacial phase frustration stabilizes unconventional skyrmion crystals
论文作者
论文摘要
手性磁相在磁化强度中具有非常规拓扑扭曲的手性阶段，由于其在旋转型应用中的潜力而引起了人们的关注。在这里，我们提出了一种通用方法，可以在人为生长的超晶格中使用界面相挫折诱导这种外来磁相。为了证明我们的方法，我们将具有两个不同手性磁相的多层视为顶部和底部的竞争订单，并使用蒙特卡洛计算显示，界面相挫折在中心层上实现。特别是，我们获得了三个非常规的阶段：一个棋盘板的晶体，一个不相同的天际条纹和铁磁性的天际晶体。在这些挫败感引起的阶段中，旋转手性驱动的拓扑厅的电导率可以大大提高。该方法提供了一个操场，以实现可以在超晶格中生长的任何材料家族中非常规磁相。
Chiral magnetic phases with an unconventional topological twist in the magnetization are of huge interest due to their potential in spintronics applications. Here, we present a general method to induce such exotic magnetic phases using interfacial phase frustration within artificially grown superlattices. To demonstrate our method, we consider a multilayer with two different chiral magnetic phases as the competing orders at the top and bottom and show, using Monte Carlo calculations, that the interfacial phase frustration is realized at the central layer. In particular, we obtain three unconventional phases: a checkerboard skyrmion crystal, an incommensurate skyrmion stripe, and a ferrimagnetic skyrmion crystal. In these frustration-induced phases, the spin chirality driven topological Hall conductivity can be largely enhanced. This method provides a playground to realize unconventional magnetic phases in any family of materials that can be grown in superlattices.
