论文标题
部分可观测时空混沌系统的无模型预测
Strain modulation of photocurrent in Weyl semimetal TaIrTe4
论文作者
论文摘要
我们使用量子传输模拟研究了应变对Cu-Tairte4-Cu异晶的光电流的影响。发现通过沿Z固定应变的增加，Weyl点可以完全破坏。在没有菌株的情况下，可以在Cu-Tairte4-Cu异质结中获得大型光电。虽然可以通过应变来急剧增强光电流并达到较大的值。因此，可以根据状态密度和带结构之间的过渡来解释光电流的最大值。应变诱导的能带和光电流表现出各向异性行为。我们的结果提供了一种新颖的途径，可以通过利用基于Tairte4的设备的机械方法来有效调节能带和光电流。
We study the effect of the strain on the energy bands of TaIrTe4 sheet and the photocurrent in the Cu-TaIrTe4-Cu heterojunction by using the quantum transport simulations. It is found that the Weyl points can be completely broken with increasing of the strain along z dirction. One can obtain a large photocurrent in the Cu-TaIrTe4-Cu heterojunction in the absence of the strain. While the photocurrent can be sharply enhanced by the strain and reach a large value. Accordingly, the maximum values of the photocurrent can be explained in terms of the transitions between peaks of density of states and band structures. The strain-induced energy bands and photocurrent exhibit anisotropic behaviors. Our results provide a novel route to effectively modulate the energy bands and the photocurrent by utilizing mechanical methods for TaIrTe4-based devices.
