论文标题
3D量子大厅效应由手性Landau水平在Weyl Semimetals中
3D Quantum Hall Effect Manipulated by Chiral Landau Levels in Weyl Semimetals
论文作者
论文摘要
我们研究了Weyl半学中的3D量子厅效应，并阐明了边缘状态的全局图片。托有3D量子大厅效应的边缘状态是Fermi弧和平行于磁场的手性散装Landau水平的组合。霍尔电导$σ_{xz}^h $，在调整磁场时显示了Weyl节点的量化高原。然而，手性兰道水平操纵了Weyl轨道的量化，尤其是在倾斜的磁场下，而所得的边缘状态导致了独特的大厅转运现象。倾斜磁场贡献了固有的初始值对$σ_{xz}^h $，这种初始值由倾斜角$θ$确定。特别是，即使垂直磁场是固定的，$σ_{xz}^h $也会在$θ$超过实验中的关键角度$θ_c$时，通过边缘状态的突然空间移动来改变其标志。我们的作品发现了Weyl半学中3D量子厅效应的独特边缘状态。
We investigate the 3D quantum Hall effect in Weyl semimetals and elucidate a global picture of the edge states. The edge states hosting 3D quantum Hall effect are combinations of Fermi arcs and chiral bulk Landau levels parallel to the magnetic field. The Hall conductance, $σ_{xz}^H$, shows quantized plateaus at Weyl nodes while tuning the magnetic field. However, the chiral Landau levels manipulate the quantization of Weyl orbits, especially under a tilted magnetic field, and the resulting edge states lead to distinctive Hall transport phenomena. A tilted magnetic field contributes an intrinsic initial value to $σ_{xz}^H$ and such initial value is determined by the tilting angle $θ$. Particularly, even if the perpendicular magnetic field is fixed, $σ_{xz}^H$ will change its sign with an abrupt spatial shift of edge states when $θ$ exceeds a critical angle $θ_c$ in an experiment. Our work uncovers the unique edge-state nature of 3D quantum Hall effect in Weyl semimetals.
