Current maps of moiré superlattices with atomic reconstruction

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-06-10 DOI:10.1063/5.0270332

Henan Fang, Mingwen Xiao

引用次数: 0

Abstract

Current maps measured by conductive atomic force microscopy are critical for investigating the atomic reconstruction in moiré superlattices. However, a microscopic analytical theory for calculating the current maps of moiré superlattices is still missing. Here, we have developed a unique theory to calculate the current maps of moiré superlattices, which is based on the optical method. The theoretical results can well reproduce the fundamental characteristics of the experiments. Furthermore, the theoretical results predict that there may exist finer structure in the current map of twisted bilayer graphene. In addition, one existing viewpoint of twisted mono-bilayer graphene, i.e., the higher-current domains correspond to ABA stacking, is challenged by the present theoretical results. The present work establishes an integral theoretical framework to calculate the current maps of moiré superlattices and provides insight into the underlying physics.

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具有原子重建的moir超晶格的电流图

导电性原子力显微镜测量的电流图对于研究摩尔超晶格中的原子重构是至关重要的。然而，一种用于计算莫尔维尔超晶格电流图的微观分析理论仍然缺失。在这里，我们发展了一种独特的理论来计算莫尔维尔超晶格的电流映射，这是基于光学方法。理论结果很好地再现了实验的基本特征。此外，理论结果预测在扭曲双层石墨烯的电流图中可能存在更精细的结构。此外，现有的关于扭曲单层石墨烯的观点，即高电流域对应于ABA堆叠，也受到了本理论结果的挑战。本工作建立了一个完整的理论框架，以计算moir超晶格的当前映射，并提供了对潜在物理的见解。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.