Probing the interplay of interactions, screening and strain in monolayer MoS2 via self-intercalation

IF 9.1 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Borna Pielić, Matko Mužević, Dino Novko, Jiaqi Cai, Alice Bremerich, Robin Ohmann, Marko Kralj, Iva Šrut Rakić, Carsten Busse
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引用次数: 0

Abstract

Controlling many-body interactions in two-dimensional systems remains a formidable task from the perspective of both fundamental physics and application. Here, we explore remarkable electronic structure alterations of MoS2 monolayer islands on graphene on Ir(111) induced by non-invasive self-intercalation. This introduces significant differences in morphology and strain of MoS2 as a result of the modified interaction with the substrate. Consequently, considerable changes of the band gap and non-rigid electronic shifts of valleys are detected, which are a combined effect of the screening of the many-body interactions and strain in MoS2. Furthermore, theory shows that each substrate leaves a unique stamp on the electronic structure of two-dimensional material in terms of those two parameters, restricted by their correlation.

Abstract Image

Abstract Image

通过自插入探测单层 MoS2 中相互作用、筛选和应变的相互作用
从基础物理学和应用的角度来看,控制二维系统中的多体相互作用仍然是一项艰巨的任务。在这里,我们探讨了 Ir(111) 石墨烯上的 MoS2 单层岛在非侵入式自插入作用诱导下发生的显著电子结构变化。由于与基底的相互作用发生了改变,MoS2 的形态和应变都发生了显著变化。因此,检测到带隙发生了相当大的变化,谷值发生了非刚性电子位移,这是 MoS2 中多体相互作用的屏蔽和应变的综合效应。此外,理论还表明,在这两个参数的相关性限制下,每种衬底都会在二维材料的电子结构上留下独特的印记。
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来源期刊
npj 2D Materials and Applications
npj 2D Materials and Applications Engineering-Mechanics of Materials
CiteScore
14.50
自引率
2.10%
发文量
80
审稿时长
15 weeks
期刊介绍: npj 2D Materials and Applications publishes papers on the fundamental behavior, synthesis, properties and applications of existing and emerging 2D materials. By selecting papers with the potential for impact, the journal aims to facilitate the transfer of the research of 2D materials into wide-ranging applications.
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