外尔(Weyl)半金属是一种新型的拓扑材料，其超高的载流子迁移率和不同寻常的电子输运性质在未来的高速电子器件中具有潜在的应用价值。如何判定Weyl半金属的手征反常是凝聚态物理领域的研究前沿和热点。本项目拟研究Weyl半金属在杂质和周期驱动共同作用下的磁电输运及准粒子相干效应，突出杂质共振态对手征反常的影响。具体研究内容包括：1)研究不同（静电或磁性）杂质对Weyl半金属磁电输运的影响，为鉴定Weyl半金属提供新的理论依据；2)研究杂质散射效应对Floquet Weyl半金属表面费米弧的调制作用，阐明Floquet Weyl半金属的杂质散射规律；3)研究磁掺杂Floquet Weyl半金属的输运性质，探讨调控Weyl半金属性质的多重手段。本项目不仅可以探究Floquet Weyl半金属的物理性质，还可为开发基于Weyl半金属的高速电子器件提供理论基础。

Weyl semimetals (WSMs) are a new type of topological materials, whose ultrahigh mobility and spectacular transport properties can be of potential applications in the future high-speed electronic devices. How to identify the chiral anomaly of the WSMs has become one of the most hotpot in the field of condensed matter physics. In this project, we aim to investigate the magnetotransport and quasiparticle interference in WSMs under perturbations of the impurity scattering and time periodically driving, during which we would emphasize the effect of the impurity-induced resonant states on the chiral anomaly. The contents are included as follows. 1) Studying the effect of different types of (charged or magnetic) impurities on the magnetotransport in WSMs and providing new theoretical foundations for identifying WSMs; 2) Studying the effect of the impurity scattering on the surface Fermi arcs of the Floquet WSMs and illuminating the quasiparticle interference characters of the Floquet WSMs; 3) Studying the electron transport of the magnetically-doped WSMs and exploring the methods for controlling the properties of the WSMs. This project, on one hand, could investigate the physical properties of Floquet WSMs, and on the other hand, it also could provide theoretical foundation for exploitation of the WSM-based high-speed electronic devices.