论文标题
不合适的分层化合物:具有未开发属性的独特,可调的异质结构材料
Misfit Layered Compounds: Unique, Tunable Heterostructured Materials with Untapped Properties
论文作者
论文摘要
基于石墨烯和二维(2D)过渡金属二进制元素化,范德华(VDW)分层异质结构(此类2D材料的堆栈)的基础,正在广泛探索,从而获得了新发现的新型电子和磁性在超级极限限制中的新型电子和磁性。在这里,我们回顾了一类天然存在的异质结构(所谓的不合适),它们将不同的VDW层与复杂的堆叠结合在一起。不属性表现出显着的结构复杂性和现象的多样性,提供了一个平台,可以系统地探索异质结构的能量和局部粘结约束,以及如何用于设计新颖的量子织物,电子响应性和磁性现象。像传统的分层材料类一样,它们通常是可去角质的,因此也可以作为手动或机器人堆叠的异质结构中的单元掺入。在这里,我们回顾了已知的不合适结构类别,其单晶和薄膜合成的工具,它们所展示的物理特性以及揭示其复杂性的计算和表征工具。还讨论了未来研究的方向。
Building on discoveries in graphene and two-dimensional (2D) transition metal dichalcogenides, van der Waals (VdW) layered heterostructures - stacks of such 2D materials - are being extensively explored with resulting new discoveries of novel electronic and magnetic properties in the ultrathin limit. Here we review a class of naturally occurring heterostructures - so called misfits - that combine disparate VdW layers with complex stacking. Exhibiting remarkable structural complexity and diversity of phenomena, misfits provide a platform on which to systematically explore the energetics and local bonding constraints of heterostructures and how they can be used to engineer novel quantum fabrics, electronic responsiveness, and magnetic phenomena. Like traditional classes of layered materials, they are often exfoliatable and thus also incorporatable as units in manually or robotically stacked heterostructures. Here we review the known classes of misfit structures, the tools for their single crystal and thin film synthesis, the physical properties they exhibit, and computational and characterization tools that are unraveling their complexity. Directions for future research are also discussed.