论文标题
来自磁盘几何磁电导的各向异性电阻率张量
Anisotropic resistivity tensor from disk geometry magneto-conductance
论文作者
论文摘要
在两个维范德华异质结构上的磁铁转运测量最近显示了单轴各向异性的特征。这样的测量几乎仅在大厅杆的几何形状中进行，这使得很难提取完全的电阻率张量。本文的目的是理论上分析均匀磁盘几何形状中各向异性磁电导率，并为磁盘上的任何地方的电势提供封闭形式的表达式，如果电流源和排水位于周长的某个地方。然后，该表达可以用于实验地提取完整的电导率张量，并通过简单的反转，即完全电阻率张量。
Magneto-transport measurements on two dimensional van der Waals heterostructures have recently shown signatures of uniaxial anisotropy. Such measurements are almost exclusively performed in a Hall bar geometry which makes it difficult to extract the full resistivity tensor. The goal of this paper is to theoretically analyze anisotropic magneto-conductance in a homogeneous disk geometry and to provide a closed form expression for the electrical potential anywhere on the disk if the current source and drain are located somewhere on the circumference. This expression can then be used to experimentally extract the full conductivity tensor, and by a simple inversion, the full resistivity tensor.
