摩尔纹材料的微观视角

IF 79.8 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Kevin P. Nuckolls, Ali Yazdani
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引用次数: 0

摘要

当代量子材料研究以拓扑学和电子相关性为主题。摩尔纹材料是这两个主题的交汇点,它是一类新兴的高度可调、强相关的二维材料,由原子薄晶体的旋转或晶格错位设计而成。在摩尔纹材料中,电子间占主导地位的库仑相互作用产生了集体电子相,通常具有强大的拓扑特性。要了解强相互作用量子系统,并为未来潜在的技术应用设计出具有新特性的材料,确定这些奇特相位的形成机制至关重要。在这篇综述中,我们将重点介绍局部光谱、热力学和电磁探针对摩尔纹材料研究这一新兴领域的贡献。这些技术不仅确定了摩尔纹材料中发现的相关绝缘体、广义维格纳晶体、非常规超导体、摩尔纹铁电和拓扑轨道铁磁体的许多基本机制,还发现了躲避空间平均全局探测的脆弱量子相。此外,我们还重点介绍了最近开发的局部探测技术,包括局部电荷感应和量子干涉探测,这些技术揭示了摩尔纹材料中新的物理观测指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A microscopic perspective on moiré materials

A microscopic perspective on moiré materials

A microscopic perspective on moiré materials
Contemporary quantum materials research is guided by themes of topology and electronic correlations. A confluence of these two themes is engineered in moiré materials, an emerging class of highly tunable, strongly correlated 2D materials designed by the rotational or lattice misalignment of atomically thin crystals. In moiré materials, dominant Coulomb interactions among electrons give rise to collective electronic phases, often with robust topological properties. Identifying the mechanisms responsible for these exotic phases is fundamental to our understanding of strongly interacting quantum systems and to our ability to engineer new material properties for potential future technological applications. In this Review, we highlight the contributions of local spectroscopic, thermodynamic and electromagnetic probes to the budding field of moiré materials research. These techniques have not only identified many of the underlying mechanisms of the correlated insulators, generalized Wigner crystals, unconventional superconductors, moiré ferroelectrics and topological orbital ferromagnets found in moiré materials, but have also uncovered fragile quantum phases that have evaded spatially averaged global probes. Furthermore, we highlight recently developed local probe techniques, including local charge sensing and quantum interference probes, that have uncovered new physical observables in moiré materials. Moiré materials are an emerging class of strongly correlated quantum materials designed by the rotational or lattice misalignment of 2D crystals. This Review discusses how local probe techniques are uniquely positioned to elucidate the microscopic mechanisms underlying the electronic phases in moiré materials.
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来源期刊
Nature Reviews Materials
Nature Reviews Materials Materials Science-Biomaterials
CiteScore
119.40
自引率
0.40%
发文量
107
期刊介绍: Nature Reviews Materials is an online-only journal that is published weekly. It covers a wide range of scientific disciplines within materials science. The journal includes Reviews, Perspectives, and Comments. Nature Reviews Materials focuses on various aspects of materials science, including the making, measuring, modelling, and manufacturing of materials. It examines the entire process of materials science, from laboratory discovery to the development of functional devices.
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