论文标题
扭曲双层和二维Moiré异质结构的带结构工程的进展
Progress on band structure engineering of twisted bilayer and two-dimensional moiré heterostructures
论文作者
论文摘要
人为建造的范德华异质结构（VDWH）为实现凝结物理学中新兴的量子现象提供了理想的平台。已经开发了两种用于构建VDWH的方法：将二维（2D）材料堆叠成具有不同晶格常数或不同方向的双层结构。由相应或不相称的超晶格模式造成的层间耦合在VDWHS中起着重要的作用，可以调节带结构并产生新的电子状态。在本文中，我们回顾了在两个模型VDWH系统中发现的一系列新颖的量子状态 - 石墨烯/六角形氮化硼（HBN）杂型 - 双层和扭曲的双层石墨烯（TBLG），并讨论如何通过这种堆叠和扭曲来修饰电子结构。我们还为未来关于异质双层材料的研究提供了观点，预计将扩大2D材料相位库。
Artificially constructed van der Waals heterostructures (vdWHs) provide an ideal platform for realizing emerging quantum phenomena in condensed matter physics. Two methods for building vdWHs have been developed: stacking two-dimensional (2D) materials into a bilayer structure with different lattice constants, or with different orientations. The interlayer coupling stemming from commensurate or incommensurate superlattice pattern plays an important role in vdWHs for modulating the band structures and generating new electronic states. In this article, we review a series of novel quantum states discovered in two model vdWH systems -- graphene/hexagonal boron nitride (hBN) hetero-bilayer and twisted bilayer graphene (tBLG), and discuss how the electronic structures are modified by such stacking and twisting. We also provide perspectives for future studies on hetero-bilayer materials, from which an expansion of 2D material phase library is expected.
