4.8 Article

Infinite Berry Curvature of Weyl Fermi Arcs

期刊

PHYSICAL REVIEW LETTERS
卷 127, 期 5, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.056601

关键词

-

资金

  1. Alexander von Humboldt Foundation
  2. German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) [SFB 1143]
  3. Germany's Excellence Strategy through the Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat [EXC 2147, 390858490]
  4. Ministry of Science and Technology, Taiwan [MOST 110-2112-M-003-008-MY3]
  5. National Center for Theoretical Sciences in Taiwan

向作者/读者索取更多资源

The study shows that Weyl Fermi arcs are generally accompanied by a divergence of the surface Berry curvature that scales as 1/k(2), relating to the distance to a hot line in the surface Brillouin zone connecting the projection of Weyl nodes with opposite chirality. The emergence of this surface Berry curvature is mainly determined by the velocity tilt of the bulk Weyl dispersion towards the surface of interest.
We show that Weyl Fermi arcs are generically accompanied by a divergence of the surface Berry curvature scaling as 1/k(2), where k is the distance to a hot line in the surface Brillouin zone that connects the projection of Weyl nodes with opposite chirality, but which is distinct from the Fermi arc itself. Such surface Berry curvature appears whenever the bulk Weyl dispersion has a velocity tilt toward the surface of interest. This divergence is reflected in a variety of Berry curvature mediated effects that are readily accessible experimentally and, in particular, leads to a surface Berry curvature dipole that grows linearly with the thickness of a slab of a Weyl semimetal material in the limit of the long lifetime of surface states. This implies the emergence of a gigantic contribution to the nonlinear Hall effect in such devices.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据