论文标题
弹道运输零零和韦伊尔半法
Ballistic transport in disordered Dirac and Weyl semimetals
论文作者
论文摘要
我们研究了无序点节点半法的狄拉克和Weyl电子的动力学。通过模拟晶格模型上的波包动力学来证明传输的弹道特征。我们表明，弹道运输在远至半金属过渡点的相当强度下生存下来，这表明点节点半学对疾病的鲁棒性。我们还可视化鼻点和线性分散的鲁棒性在破裂的翻译对称性下。波数据包的速度会随着无序强度的增加而减慢，并消失了无序的临界强度，因此成为顺序参数。波数据包速度的临界行为与缩放猜想预测的速度一致。
We study the dynamics of Dirac and Weyl electrons in disordered point-node semimetals. The ballistic feature of the transport is demonstrated by simulating the wave-packet dynamics on lattice models. We show that the ballistic transport survives under a considerable strength of disorder up to the semimetal-metal transition point, which indicates the robustness of point-node semimetals against disorder. We also visualize the robustness of the nodal points and linear dispersion under broken translational symmetry. The speed of the wave packets slows down with increasing disorder strength, and vanishes toward the critical strength of disorder, hence becoming the order parameter. The obtained critical behavior of the speed of the wave packets is consistent with that predicted by the scaling conjecture.
