Robust conductance zeroes in graphene quantum dots and other bipartite systems

M. Nita, M. Tolea, D. C. Marinescu

发表信息：: Phys. Rev. B 101, 235318 (2020)
DOI：: 10.1103/PhysRevB.101.235318

英文摘要：

Within the Landauer transport formalism we demonstrate that conductance zeroes 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.

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