Pressure-triggered stacking dependence of interlayer coupling in bilayer WS2

IF 6.4 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Science China Physics, Mechanics & Astronomy Pub Date : 2024-06-28 DOI:10.1007/s11433-024-2376-9

Zejuan Zhang, Chenyin Jiao, Shenghai Pei, Xilong Zhou, Jiaze Qin, Wanli Zhang, Yu Zhou, Zenghui Wang, Juan Xia

引用次数: 0

Abstract

Tungsten disulfide (WS₂) has been reported to show negligible stacking dependence under ambient conditions, impeding its further explorations on physical properties and potential applications. Here, we realize efficient modulation of interlayer coupling in bilayer WS₂ with 3R and 2H stackings by high pressure, and find that the pressure-triggered interlayer coupling and pressure-induced resonant-to-nonresonant transition exhibit prominent stacking dependence, which are experimentally observed for the first time in WS₂. Our work may unleash the stacking degree of freedom in designing WS₂ devices with tailored properties correlated to interlayer coupling.

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双层 WS2 层间耦合的压力触发堆叠依赖性

据报道，二硫化钨（WS2）在环境条件下的堆叠依赖性可以忽略不计，这阻碍了对其物理性质和潜在应用的进一步探索。在这里，我们通过高压实现了对具有 3R 和 2H 堆叠的双层 WS2 层间耦合的有效调制，并发现压力触发的层间耦合和压力诱导的共振到非共振转变表现出突出的堆叠依赖性，这在 WS2 中还是第一次被实验观察到。在设计具有与层间耦合相关的定制特性的 WS2 器件时，我们的工作可能会释放堆叠的自由度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science China Physics, Mechanics & Astronomy PHYSICS, MULTIDISCIPLINARY-

CiteScore

10.30

自引率

6.20%

发文量

4047

审稿时长

3 months

期刊介绍： Science China Physics, Mechanics & Astronomy, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Physics, Mechanics & Astronomy, is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Reviews summarize representative results and achievements in a particular topic or an area, comment on the current state of research, and advise on the research directions. The author’s own opinion and related discussion is requested. Research papers report on important original results in all areas of physics, mechanics and astronomy. Brief reports present short reports in a timely manner of the latest important results.