论文标题
几层黑色磷的量子霍尔边缘状态的平衡和过滤
Equilibration and Filtering of Quantum Hall Edge States in Few-Layer Black Phosphorus
论文作者
论文摘要
我们认识到几层黑磷（BP）设备中的P-P'-P连接，并使用磁通型传输测量来研究边缘状态在具有不同电荷密度不同的区域界面的平衡和传播。我们观察到完整的平衡，其中所有边缘通道平衡并在接口处平均分配，并且部分平衡，其中仅在相同自旋极化模式之间仅发生平衡。此外，连接处的低掺杂水平的内部P'-Region可以作为高度掺杂的P区域的过滤器发挥作用，该过滤器证明了边缘通道的栅极可调传输。
We realize p-p'-p junctions in few-layer black phosphorus (BP) devices, and use magneto-transport measurements to study the equilibration and transmission of edge states at the interfaces of regions with different charge densities. We observe both full equilibration, where all edge channels equilibrate and are equally partitioned at the interfaces, and partial equilibration, where only equilibration only takes place among modes of the same spin polarization. Furthermore, the inner p'-region with low-doping level in the junction can function as a filter for highly doped p-regions which demonstrates gate-tunable transmission of edge channels.
