论文标题
回顾Dirac-Weyl半法中手性异常的实验
Review of experiments on the chiral anomaly in Dirac-Weyl semimetals
论文作者
论文摘要
我们对Dirac/Weyl半法的手性异常的最新实验结果进行了综述。经过简短的介绍后，我们追踪导致预测具有受保护的3D散装dirac节点的材料的步骤。手性异常是在平行电场和磁场中的手性兰道水平之间的电荷泵送方面提出的。描述了相关的手性磁效应和手性零声音。仔细分析了当前的喷射效应，在纵向磁场上呈现了实验的主要并发症。我们描述了最近的测试，该测试能够将这些半经典伪影与内在量子效应区分开。转向实验，我们在dirac/weyl semimetals na3bi，gdptbi，zrte5和taas中进行了批判性地回顾了纵向磁势实验。回顾了手性异常的替代方法，包括有关非本地运输，热电器，导热率和光泵探针响应的实验。在补充中，我们简要讨论了高能物理学和相对论量子场理论的更广泛背景下的手性异常，以及异常在量子物理学和差异几何形状Nexus中的主演作用。
We provide a review of recent experimental results on the chiral anomaly in Dirac/Weyl semimetals. After a brief introduction, we trace the steps leading to the prediction of materials that feature protected 3D bulk Dirac nodes. The chiral anomaly is presented in terms of charge pumping between the chiral Landau levels of Weyl fermions in parallel electric and magnetic fields. The related chiral magnetic effect and chiral zero sound are described. Current jetting effects, which present major complications in experiments on the longitudinal magnetoresistance, are carefully analyzed. We describe a recent test that is capable of distinguishing these semiclassical artifacts from intrinsic quantum effects. Turning to experiments, we review critically the longitudinal magnetoresistance experiments in the Dirac/Weyl semimetals Na3Bi, GdPtBi, ZrTe5 and TaAs. Alternate approaches to the chiral anomaly, including experiments on non-local transport, thermopower, thermal conductivity and optical pump-probe response are reviewed. In the Supplement, we provide a brief discussion of the chiral anomaly in the broader context of high energy physics and relativistic quantum field theory, as well the anomaly's starring role at the nexus of quantum physics and differential geometry.
