论文标题

在实际Weyl半法中,应变诱导的Landau水平的崩溃

Strain-induced collapse of Landau Levels in real Weyl semimetals

论文作者

Lee, Yang-Jun, Park, Cheol-Hwan, Vozmediano, María A. H.

论文摘要

垂直于磁场的电场下Landau水平的崩溃是狄拉克材料的独特特征之一。晶格变形以量规场的形式与电子自由度的偶联也是如此,从而允许从应变中形成伪landau水平。我们分析了在动量空间中托有各向异性,倾斜的Weyl锥的逼真的Weyl半学菌株引起的Landau水平的崩溃。我们执行第一原理计算,以确定可以通过实验访问的TAA中Landau水平崩溃的外部应变条件。

The collapse of Landau levels under an electric field perpendicular to the magnetic field is one of the distinctive features of Dirac materials. So is the coupling of lattice deformations to the electronic degrees of freedom in the form of gauge fields which allows the formation of pseudo-Landau levels from strain. We analyze the collapse of Landau levels induced by strain on realistic Weyl semimetals hosting anisotropic, tilted Weyl cones in momentum space. We perform first-principles calculations, to establish the conditions on the external strain for the collapse of Landau levels in TaAs which can be experimentally accessed.

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