Quantum transport of electrons in emerging van der Waals devices

二维（2D）材料是凝聚态量子现象研究的前沿，世界上许多研究小组目前正在探索它们的基本性质和应用。存在大量不同类型的二维材料，每种材料都提供各种不同的特性。这些单层可以堆叠形成范德华（vdW）异质结构，这些异质结构设计具有特定的“内置”设备功能。这些堆叠的性质主要取决于它们的层结构，并且可以通过控制层晶格之间的相对“扭转”角来显着改变。在这个项目中，学生将开发模型来理解和预测电子在新型vdW异质结构层之间和层内移动的新量子输运现象。他们将研究石墨烯与二维后过渡金属硫族化合物（一类具有优异电子性能的二维半导体）的不同层构型，并考虑“扭转”角和磁场的影响。

Two-dimensional (2D) materials are at the forefront of research in quantum phenomena in condensed matter, with many research groups worldwide currently exploring their fundamental properties and applications. A large number of different types of 2D materials exist and each offer a wide variety of different properties. These monolayers can be stacked to create van der Waals (vdW) heterostructures that are designed with specific "built-in" device functionality. The properties of these stacks depend critically on their layer configuration and can be dramatically modified by controlling the relative "twist" angle between the lattices of the layers. In this project, the student will develop models to understand and predict new quantum transport phenomena of electron moving between and within the layers of novel vdW heterostructures. They will investigate different layer configurations of graphene with the 2D post transition metal chalcogenides (a class of 2D semiconductors with excellent electronic properties) and consider the effect of "twist" angle and magnetic fields.