Exploring the Stability of Twisted van der Waals Heterostructures.,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Exploring the Stability of Twisted van der Waals Heterostructures.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-09-08 , DOI: 10.1021/acsami.0c13971
Andrea Silva _{1,

2} , Victor E P Claerbout ₃ , Tomas Polcar _{1,

3} , Denis Kramer _{1,

4} , Paolo Nicolini ₃

Affiliation

Recent research showed that the rotational degree of freedom in stacking 2D materials yields great changes in the electronic properties. Here, we focus on an often overlooked question: are twisted geometries stable and what defines their rotational energy landscape? Our simulations show how epitaxy theory breaks down in these systems, and we explain the observed behavior in terms of an interplay between flexural phonons and the interlayer coupling, governed by the moiré superlattice. Our argument, applied to the well-studied MoS₂/graphene system, rationalizes experimental results and could serve as guidance to design twistronic devices.

中文翻译：

探索扭曲的范德华异质结构的稳定性。

最近的研究表明，堆叠2D材料时的旋转自由度在电子特性方面产生了很大的变化。在这里，我们关注一个经常被忽视的问题：扭曲的几何形状是否稳定，什么定义了它们的旋转能态？我们的模拟显示了外延理论如何在这些系统中崩溃，并且我们根据由波纹莫尔超晶格控制的弯曲声子与层间耦合之间的相互作用来解释观察到的行为。我们的论点，适用于经过充分研究的MoS ₂ /石墨烯体系，合理化了实验结果，可以作为设计旋扭器件的指南。

更新日期：2020-10-07

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南