论文标题
扭曲双层石墨烯中涡流位移场的起源
Origin of the vortex displacement field in twisted bilayer graphene
论文作者
论文摘要
已经提出了扭曲双层系统中原子位移模式的模型描述。该模型基于对几个位错集合的考虑，该语言被广泛用于晶界和膜/底物系统。我们表明，平行螺钉位错的三个集合足以描述整个层的旋转，以及弹性松弛引起的涡流状位移。结果清楚地解释了结构状态的观察到的特征，例如涡旋，并伴随着交替的堆叠。
Model description of patterns of atomic displacements in twisted bilayer systems has been proposed. The model is based on the consideration of several dislocation ensembles, employing a language that is widely used for grain boundaries and film/substrate systems. We show that three ensembles of parallel screw dislocations are sufficient both to describe the rotation of the layers as a whole, and for the vortex-like displacements resulting from elastic relaxation. The results give a clear explanation of the observed features of the structural state such as vortices, accompanied by alternating stacking.
