二维材料的新奇物理及异质结的能带调控

以石墨烯为代表的层状材料具备显著区别于三维材料的新奇物理特性。更为重要的是，原子级平整的二维材料使得科学家们可以将不同的二维材料通过堆垛或者把相同的二维材料通过堆垛加扭转构成范德瓦耳斯异质结。通过层间耦合作用，可对异质结的能带结构和物理性质进行有效调控，从而衍生出单个二维材料所不具备的新奇物性。范德瓦耳斯异质结的能带调控极大地拓宽了二维材料的科学研究和应用前景。

Novel physics of two-dimensional materials and band structure engineering in van der Waals heterostructures

Layered materials such as graphene exhibit many intriguing properties that are distinct from three-dimensional materials. Moreover, their atomically flat surface makes it possible to form van der Waals heterostructures by stacking different 2D materials or stacking and rotating the same materials. The interlayer coupling is a useful pathway to control the electronic structure and physical properties of such heterostructures, resulting in new properties that are different from those of the pristine materials. Such band structure engineering based on van der Waals heterostructures can extend the boundaries of research and potential applications to new realms.