论文标题
魔术角扭曲的双层石墨烯和量化的异常效果
Hybrid Wannier Chern bands in magic angle twisted bilayer graphene and the quantized anomalous Hall effect
论文作者
论文摘要
我们提出了一种使用混合浮游功能来研究扭曲双层石墨烯中强相互作用方案的方法，该函数在一个方向上像个方向一样，在另一个方向上类似于bloch。我们专注于Bistritzer和MacDonald提出的Continuum模型给出的活动带，并讨论相应的混合Wannier函数的属性。然后，我们使用Hartree-fock方法对$ \ pm 3 $电子的填充物进行研究。我们在这两个填充物中讨论了不同的不同制度，在这两个填充物中可以看到量化的异常效应。
We propose a method for studying the strong interaction regimes in twisted bilayer graphene using hybrid Wannier functions, that are Wannier-like in one direction and Bloch-like in the other. We focus on the active bands as given by the continuum model proposed by Bistritzer and MacDonald, and discuss the properties of corresponding hybrid Wannier functions. We then employ the method for a study of the fillings of $\pm 3$ electrons per moiré cell using the Hartree-Fock method. We discuss at length different regimes under which a quantized anomalous Hall effect is seen in these two fillings.
