Robust conductance zeroes in graphene quantum dots and other bipartite systems

Abstract

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.

References in corpus (5)

• A Magic Ratio Rule for Beginners: a Chemist's Guide to Quantum Interference in Molecules
• Spectrum of $\pi$-electrons in Graphene As a Macromolecule
• Non-universal transmission phase behaviour of a large quantum dot
• Non-Hermitian approach of edge states and quantum transport in a magnetic field
• Ground state spin and excitation energies in half-filled Lieb lattices

Cited by in corpus (3)

• Stability of destructive interference antiresonances in electron transport through graphene nanostructures
• Electrode effects on the observability of destructive quantum interference in single-molecule junctions
• Conductance zeros in complex molecules and lattices from the interference set method