Nonlocal transport in Weyl semimetals in the hydrodynamic regime
Nonlocal transport in Weyl semimetals in the hydrodynamic regime
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DOI：
10.1103/physrevb.98.035121
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发表时间：
2018-04
影响因子：
3.7
通讯作者：
E. V. Gorbar;V. A. Miransky;I. Shovkovy;P. Sukhachov
中科院分区：
文献类型：
--
作者：
E. V. Gorbar;V. A. Miransky;I. Shovkovy;P. Sukhachov
利用自洽流体动力学框架研究了具有电流源和电流漏的半无限外尔半金属平板中手征电子流体的非局域响应.研究发现，陈-西蒙斯项导致电子流和电场的空间不对称性。最值得注意的是，相应的拓扑项可以导致负的非局部电阻。此外，它们引起的异常霍尔电流，这是敏感的电场在平面中的接触的空间分布，并依赖于手征位移的方向。
The nonlocal response of chiral electron fluid in a semi-infinite Weyl semimetal slab with the electric current source and drain attached to its surface is studied by using the consistent hydrodynamic framework. It is found that the Chern-Simons terms lead to a spatial asymmetry of the electron flow and the electric field. Most remarkably, the corresponding topological terms could result in a negative nonlocal resistance. In addition, they give rise to the anomalous Hall current, which is sensitive to the spatial distribution of the electric field in the plane of the contacts and depends on the orientation of the chiral shift.