Phonon Chirality Manipulation Mechanism in Transition-Metal Dichalcogenide Interlayer-Sliding Ferroelectrics,Nano Letters

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Phonon Chirality Manipulation Mechanism in Transition-Metal Dichalcogenide Interlayer-Sliding Ferroelectrics
Nano Letters ( IF 9.6 ) Pub Date : 2023-11-17 , DOI: 10.1021/acs.nanolett.3c03787
Hao Chen _{1,

2} , Qianqian Wang ₃ , Xukun Feng ₃ , Weikang Wu ₄ , Lifa Zhang ₂

Affiliation

As an ideal platform, both the theoretical prediction and first experimental verification of chiral phonons are based on transition-metal dichalcogenide materials. The manipulation of phonon chirality in these materials will have a profound effect on the study of chiral phonons. In this work, we utilize the sliding ferroelectric effect to realize the phonon chirality manipulation mechanism in transition-metal dichalcogenide materials. Based on first-principles calculations, we find the different manipulation effects of interlayer sliding on the phonon chirality and Berry curvature in bilayer and four-layer MoS₂ sliding ferroelectrics. These further affect the phonon angular momentum and magnetization under a temperature gradient and the phonon Hall effect under a magnetic field. Our work connects two emerging fields and opens up a new route to manipulating phonon chirality in transition-metal dichalcogenide materials through the sliding ferroelectric mechanism.

中文翻译：

过渡金属二硫属化物层间滑动铁电体中的声子手性操纵机制

作为一个理想的平台，手性声子的理论预测和首次实验验证都是基于过渡金属二硫属化物材料。这些材料中声子手性的操纵将对手性声子的研究产生深远的影响。在这项工作中，我们利用滑动铁电效应来实现过渡金属二硫属化物材料中的声子手性操纵机制。基于第一性原理计算，我们发现层间滑动对双层和四层MoS ₂滑动铁电体中声子手性和贝里曲率的不同操纵效应。这些进一步影响温度梯度下的声子角动量和磁化强度以及磁场下的声子霍尔效应。我们的工作连接了两个新兴领域，并开辟了一条通过滑动铁电机制操纵过渡金属二硫属化物材料中声子手性的新途径。

更新日期：2023-11-17

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