Magnetic Two-Dimensional Chromium Trihalides: A Theoretical Perspective.,Nano Letters

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Magnetic Two-Dimensional Chromium Trihalides: A Theoretical Perspective.
Nano Letters ( IF 9.6 ) Pub Date : 2020-07-29 , DOI: 10.1021/acs.nanolett.0c02381
D Soriano ₁ , M I Katsnelson ₁ , J Fernández-Rossier _{2,

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Affiliation

The discovery of ferromagnetic order in monolayer two-dimensional (2D) crystals has opened a new venue in the field of 2D materials. Two-dimensional 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, CrI₃, CrBr₃, and CrCl₃, 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 Moiré magnets and magnetic skyrmions are also discussed. Finally, we give some prospects about the future interest of these materials and possible device applications.

中文翻译：

磁性二维三卤化铬：理论观点。

单层二维（2D）晶体中铁磁有序的发现为2D材料领域开辟了一个新领域。二维磁体不仅本身很有趣，而且它们集成在范德华力异质结构中，可以观察到超薄极限中的新奇特异效应。铬三卤化物的家庭，国际广播电台₃，CrBr ₃，和肌酐清除率₃到目前为止，在磁性2D晶体中研究最多。在本迷你评论中，我们提供了对磁性2D三卤化物的理论理解的最新观点，其中大多数也与其他2D磁体（如三卤化钒）有关。我们讨论了既定的事实，例如磁矩的起源和磁各向异性，并讨论了开放问题，例如各向异性自旋耦合的性质和磁振子间隙的大小。还讨论了有关莫尔磁铁和天文粒子的最新理论预测。最后，我们对这些材料的未来兴趣以及可能的设备应用给出了一些前景。

更新日期：2020-09-10

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