Chirality-Dependent Hall Effect in Weyl Semimetals

被引：85

作者：

Yang, Shengyuan A. ^{[1
]}

Pan, Hui ^{[2
]}

Zhang, Fan ^{[3
]}

机构：

[1] Singapore Univ Technol & Design, Res Lab Quantum Mat, Singapore 487372, Singapore

[2] Beihang Univ, Dept Phys, Beijing 100191, Peoples R China

[3] Univ Texas Dallas, Dept Phys, Dallas, TX 75080 USA

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 15期

关键词：

SPIN HALL; TOPOLOGICAL INSULATORS; PHASE; CRYSTALS; POINTS; PROOF; LIGHT;

D O I：

10.1103/PhysRevLett.115.156603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We generalize a semiclassical theory and use the argument of angular momentum conservation to examine the ballistic transport in lightly doped Weyl semimetals, taking into account various phase-space Berry curvatures. We predict universal transverse shifts of the wave-packet center in transmission and reflection, perpendicular to the direction in which the Fermi energy or velocities change adiabatically. The anomalous shifts are opposite for electrons with different chirality, and they can be made imbalanced by breaking inversion symmetry. We discuss how to utilize local gates, strain effects, and circularly polarized lights to generate and probe such a chirality-dependent Hall effect.

引用

页数：5

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