论文标题

石墨烯中电子带的对称:(几乎)自由电子与紧密结合

Symmetry of electron bands in graphene: (nearly) free electron vs. tight-binding

论文作者

Kogan, Eugene, Silkin, Vyacheslav M.

论文摘要

我们介绍了基于组理论的数值带计算和分析分析获得的石墨烯中所有电子带的对称标记。后者是在(几乎)游离电子模型的框架或紧密结合模型的框架中进行的。关于频段相对位置的预测,可以根据每个模型仅使用组理论(如有必要的话,以及其他简单的定性论点)来做出的预测是互补的。

We present the symmetry labelling of all electron bands in graphene obtained by combining numerical band calculations and analytical analysis based on group theory. The latter was performed both in the framework of the (nearly) free electron model, or in the framework of the tight-binding model. The predictions about relative positions of the bands which can be made on the basis of each of the models just using the group theory (and additional simple qualitative arguments, if necessary) are complimentary.

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