Within the Landauer transport formalism we demonstrate that conductance zeros are possible in bipartite systems at half-filling when leads are contacted to different sublattice sites. In particular, we investigate the application of this theory to graphene quantum dots with leads in the armchair configuration. The obtained conductance cancellation is robust in the presence of any single-site impurity.

中文翻译：

---

石墨烯量子点和其他二分体系中的稳健电导零

在Landauer运输形式论中，我们证明了当铅接触不同的亚晶格位置时，在半填充的二分系统中电导为零是可能的。特别地，我们研究了该理论在扶手椅构型中对含铅石墨烯量子点的应用。在存在任何单中心杂质的情况下，获得的电导消除作用很强。