.png){kind=icon}
返回
Extended magic phase in twisted graphene multilayers
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevResearch.6.013165.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Theoretical and experimental studies have verified the existence of magic angles in twisted bilayer graphene, where the rotation angle between layers gives rise to flat bands and consequently exotic correlated phases. Recently, magic-angle phenomena have been predicted and reported in other graphene systems, for instance, multilayers with alternating twist angles and trilayers with identical twist angles between consecutive layers. In this paper, we present a comprehensive theoretical study on flat bands in general twisted graphene systems. Using the continuum model in the chiral limit, we demonstrate the existence of flat bands in a variety of multilayers where the ratios between twist angles are rational and develop a framework for predicting magic-angle sets in trilayer configurations with arbitrary ratio of rotation angles. Our results are corroborated by tight-binding calculations. Remarkably, the technique we developed can be extended to systems with many layers of graphene. Our results suggest that flat bands can exist in graphene multilayers with angle disorder, that is, narrow samples of turbostatic graphite, point to the existence of a continuous, connected magic surface in trilayer configuration space, and compare favourably with contemporary experiments on trilayer moire quasicrystals.
Keyword:
MOIRE
SUPERCONDUCTIVITY
期刊
IF:
4.2
论文数:
7.6K
被引数:
2.7W
机构
引用论文
Fractal energy gaps and topological invariants in hBN/graphene/hBN double moire systems.png)
PHYSICAL REVIEW B
OAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏Identification of required nutrient components of yeast nitrogen base for Candida shehatae ATTCC 22984 fermenting xylose to ethanol鉴定Candida shehatae ATTCC 22984在木糖发酵生产乙醇过程中酵母氮基所需营养组分的鉴定
PREAI
分享收藏Maximally Localized Wannier Orbitals and the Extended Hubbard Model for Twisted Bilayer GraphenePHYSICAL REVIEW XOAAI
PHYSICAL REVIEW XIF15.7
OAAI分享收藏Moire commensurability and the quantum anomalous Hall effect in twisted bilayer graphene on hexagonal boron nitridePHYSICAL REVIEW BOAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏
查看更多内容