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arXiv · 2206.08281

Strain modulation of photocurrent in Weyl semimetal TaIrTe4

Ying Ding·XinRu Wang·LieHong Liao·XinYu Chen·JiaYan Zhang·YueYue Wang·Hao Ying·Yuan Li
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Abstract

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.

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Ying Ding, XinRu Wang, LieHong Liao, XinYu Chen, JiaYan Zhang, YueYue Wang, Hao Ying, Yuan Li. 2022-06-16. Strain modulation of photocurrent in Weyl semimetal TaIrTe4. https://doi.org/10.1364/ol.466325

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