论文标题
释放磁性二维材料中的潜在手性
Releasing latent chirality in magnetic two-dimensional materials
论文作者
论文摘要
Dzyaloshinskii-Moriya的相互作用是手性磁性的核心，引起了富含磁性材料（包括环形，螺旋螺旋，天空敏感的磁性材料）中富含非共线和独特的拓扑自旋纹理的出现。在这里，我们表明，由于非磁离子上的较大的自旋轨道耦合，强大的内在DMI生活在最近发现的范德华磁性二维材料中。在完美的晶体中，这种固有的DMI仍然隐藏，但是在磁离子之间的任何突破对称性的突破，在样品边缘处不可避免，在当前的结构缺陷，材料的任何屈曲或在不均匀的底物上都不明显的菌株。我们证明了这种潜在手性在原型磁单层-CRI3上的释放，并讨论了许多可实现的DMI模式，它们通过纳米工程和外部电场进行调整，从而在2D Magnetoelectronics中打开了新颖的路线。
Dzyaloshinskii-Moriya interaction is at heart of chiral magnetism and causes emergence of rich non-collinear and unique topological spin textures in magnetic materials, including cycloids, helices, skyrmions and other. Here we show that strong intrinsic DMI lives in recently discovered van der Waals magnetic two-dimensional materials, due to the sizeable spin-orbit coupling on the non-magnetic ions. In a perfect crystal, this intrinsic DMI remains hidden, but is released with any break of point-inversion symmetry between magnetic ions, unavoidable at the sample edges, at ever present structural defects, with any buckling of the material, or with non-uniform strain on an uneven substrate. We demonstrate such release of latent chirality on an archetypal magnetic monolayer - CrI3, and discuss the plethora of realizable DMI patterns, their control by nanoengineering and tuning by external electric field, thereby opening novel routes in 2D magnetoelectronics.
