标题： 扭曲双层石墨烯中的奇异量子现象 显示英文标题

标题： Exotic Quantum Phenomena in Twisted Bilayer Graphene

摘要： 双层石墨烯以大约1.1{\deg }的角度扭曲，更广为人知的是魔角，表现出超平坦的莫尔超晶格带，这是高度可调的奇异量子现象的来源。 这些现象，如超导性、关联的莫特样绝缘态和轨道铁磁性，是由强关联物理驱动的，这超越了经典理论。 此类经典模型的不足以及对最近观察到的奇异现象缺乏理论理解，促使重新审视材料系统的理论，并将其与观察到的行为联系起来。 本文回顾了扭曲双层石墨烯背后的物理，主要关注莫尔物理以及电子（平坦）带结构的重要性。 此外，本文简要概述了关联绝缘态、超导性和轨道铁磁性的新兴现象。 最后，介绍了控制相互作用驱动态和调节电子相互作用的最新进展。 显示英文摘要

摘要： Bilayer graphene twisted at the angle of about 1.1{\deg} better known as magic angle, exhibits ultra-flat moir\'e superlattice bands that are a source of highly-tunable, exotic quantum phenomena. Such phenomena, like superconductivity, correlated Mott-like insulating states and orbital ferromagnetism are driven by strong-correlation physics that defies classical theories. The inadequacy of such classical models and the lack of theoretical understanding of the recently observed exotic phenomena calls for revisiting the theory behind the material system and associating it with the observed behaviour. This article reviews the physics behind twisted bilayer graphene, focusing primarily on moir\'e physics and the importance of electronic (flat) band structure. In addition, this paper provides a brief overview of the emerging phenomena of correlated insulating states, superconductivity and orbital ferromagnetism. Finally, the most recent developments in controlling the interaction-driven states and tuning the electronic interactions are presented.