Magnetic van der Waals Heterostructures

无机范德华(VDW)半导体由于其独特的性质，包括谷电子学、拓扑超导电性和自旋霍尔效应，在过去的12个月里引起了人们的极大关注。这些材料被组织在原子层中，层内相互作用强，层之间的VDW力弱，因此能够隔离单个原子或分子层。此外，通过堆积不同的层来形成异质结构(HSS)，可以设计出具有各种性能的新材料。这些高速钢具有无缝的层间接触、尖锐和局域的电势、低应变和层间力以及堆叠配准的角度自由度。层之间的角度失配旋转可能导致莫尔晶格具有较大的单位晶胞，以及与组成层不同的电子和光学性质。我们建议研究由新型磁性2D材料形成的HSS的性质以及它们提供的新的物理现象，具有潜在的变革性影响。这项拟议的工作将研究具有谷极化过渡金属二卤化物或/和2D超导体的2D反铁磁(AFM)半导体的HSS。我们的目标是通过调节层间相互作用的强度和性质来控制HSS的性质，这些相互作用是由旋转排列、层间电荷转移和层的电子特性引起的。拟议的研究将涉及尖端的光学、磁光和电学实验技术以及支持理论范式的发展，旨在了解磁性高速钢的复杂界面。最终，在2DHSS方面积累的知识将有助于展示一种新型量子电子器件的工作范式。该工作计划旨在利用协同多学科团队和各小组之间的密切合作。

Inorganic van der Waals (vdW) semiconductors have attracted a tremendous attention in the last dec-ade due to their unique properties, including valley electronics, topological superconductivity and spin Hall effect. These materials are organized in atomistic layers with strong interactions within the layers and weak vdW forces between layers, hence enabling the isolation of single atomic or molecular layers. Furthermore, new materials with various properties can be engineered by the formation of heterostruc-tures (HSs) by stacking of dissimilar layers. These HSs feature seamless interlayer contact, sharp and localized electronic potential, low strain and interlayer forces, and an angular degree of freedom in stacking registry. An angular misfit rotation between layers can results in a moiré lattice with a large unit cell, and electronic and optical properties different from the constituent layers. We propose to investigate the nature of HSs formed from novel magnetic 2D materials and the new physical phenomena they offer, bearing the potential of a transformative impact. The proposed work will investigate HSs of 2D antiferromagnetic (AFM) semiconductors with valley-polarized transition metal dichalcogenides or/and 2D superconductors. We aim to control the HSs properties by tuning the strength and nature of interlayer interactions, as resulted by rotational alignment, interlayer charge transfer and electronic characteristic of the layers. The proposed research will involve cutting edge optical, magneto-optical and electrical experimental techniques along with the development of supporting theoretical paradigms, aimed at understanding the complex interfaces of magnetic HSs. Ultimately, the accumulated knowledge on 2D HSs will be har-nessed towards demonstrating a working paradigm of novel quantum electronic device. The work plan designed to take advantage of the synergetic multidisciplinary team and the close cooperation between groups.