Anomalous transport properties of Dirac and Weyl semimetals (Review Article)
Anomalous transport properties of Dirac and Weyl semimetals (Review Article)
复制标题
DOI：
10.1063/1.5037551
复制
发表时间：
2017-12
影响因子：
0.8
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
在这篇综述中，我们讨论了Dirac和Weyl半金属中电子准粒子的广泛的拓扑性质。它们的非平凡拓扑由Weyl结点附近类似单极的Berry曲率以及结点之间的能量和动量空间间隔来量化。动量分离，也称为手征位移，是这篇综述的关键内容之一。我们证明了它可以在狄拉克材料中在背景磁场中动态产生。我们还特别注意了背景电磁场与Dirac和Weyl半金属的拓扑特征之间的各种形式的相互作用。特别是，我们讨论了它们在电荷和手性电荷、热的传输以及与费米弧态相关的量子振荡方面的特征。对费米弧态的耗散输运的起源进行了严格的研究。最后，回顾了描述Weyl半金属的一致手性动力学理论，并展示了它的应用。
In this review we discuss a wide range of topological properties of electron quasiparticles in Dirac and Weyl semimetals. Their nontrivial topology is quantified by a monopole-like Berry curvature in the vicinity of Weyl nodes, as well as by the energy and momentum space separations between the nodes. The momentum separation, which is also known as the chiral shift, is one of the key elements of this review. We show that it can be dynamically generated in Dirac materials in a background magnetic field. We also pay a special attention to various forms of interplay between the background electromagnetic fields and the topological characteristics of Dirac and Weyl semimetals. In particular, we discuss their signature features in the transport of the electric and chiral charges, heat, as well as the quantum oscillations associated with the Fermi arc states. The origin of the dissipative transport of the Fermi arc states is critically examined. Finally, a consistent chiral kinetic theory for the description of Weyl semimetals is reviewed and its applications are demonstrated.