论文标题
手性异常诱导的Weyl半法的非线性霍尔效应
Nonlinear Hall effect in Weyl semimetals induced by chiral anomaly
论文作者
论文摘要
我们预测某些静电对称性损坏的Weyl半法的非线性霍尔效应。当偏向韦伊尔节点的能量分散偏斜时 - 韦尔锥被“倾斜” - 异常速度和手性异常的协同作用会引起非线性霍尔效应。该大厅的电导率在电场和磁场上都是线性的，并且严格取决于韦尔锥的倾斜。我们还表明，这种作用不依赖有限的浆果曲率偶极子，与固有的量子非线性霍尔效应相比，该效果最近在II型Weyl半法中观察到。
We predict a nonlinear Hall effect in certain Weyl semimetals with broken inversion symmetry. When the energy dispersions about pairs of Weyl nodes are skewed -- the Weyl cones are "tilted" -- the concerted actions of the anomalous velocity and the chiral anomaly give rise to the nonlinear Hall effect. This Hall conductivity is linear in both electric and magnetic fields, and depends critically on the tilting of the Weyl cones. We also show that this effect does not rely on a finite Berry curvature dipole, in contrast to the intrinsic quantum nonlinear Hall effect that was recently observed in type-II Weyl semimetals.
