论文标题
磁性二维铬三亚甲化体：理论观点
Magnetic Two-Dimensional Chromium Trihalides: A Theoretical Perspective
论文作者
论文摘要
单层2D晶体中的铁磁顺序的发现在二维（2D）材料领域开设了一个新场地。 2D磁铁不仅是很有趣的，而且它们在范德华异质结构中的整合允许在超薄极限中观察新的和外来的效果。到目前为止，Trihides Chromium trihalides，CRI $ _3 $，CRBR $ _3 $和CRCL $ _3 $是磁性2D晶体中研究最多的。在这个迷你审查中，我们提供了对磁性2D Trihalides理论理解的艺术状态的观点，其中大多数也将与其他2D磁铁（例如Trihalides）相关。我们讨论了良好的事实，例如磁矩的起源和磁各向异性和地址，以及开放问题，例如各向异性自旋耦合的性质以及镁质间隙的大小。还讨论了有关Moir \'e磁铁和磁性天空的最新理论预测。最后，我们为这些材料的未来利益和可能的设备应用提供了一些前景。
The discovery of ferromagnetic order in monolayer 2D crystals has opened a new venue in the field of two dimensional (2D) materials. 2D magnets are not only interesting on their own, but their integration in van der Waals heterostructures allows for the observation of new and exotic effects in the ultrathin limit. The family of Chromium trihalides, CrI$_3$, CrBr$_3$ and CrCl$_3$, is, so far, the most studied among magnetic 2D crystals. In this mini-review, we provide a perspective of the state of the art of the theoretical understanding of magnetic 2D trihalides, most of which will also be relevant for other 2D magnets, such as vanadium trihalides. We discuss both the well-established facts, such as the origin of the magnetic moment and magnetic anisotropy and address as well open issues such as the nature of the anisotropic spin couplings and the magnitude of the magnon gap. Recent theoretical predictions on Moir\' e magnets and magnetic skyrmions are also discussed. Finally, we give some prospects about the future interest of these materials and possible device applications.
