Control of quantum interference in molecular junctions: Understanding the origin of Fano and anti- resonances

Abstract

We investigate within a coarse-grained model the conditions leading to the appearance of Fano resonances or anti-resonances in the conductance spectrum of a generic molecular junction with a side group (T-junction). By introducing a simple graphical representation (parabolic diagram), we can easily visualize the relation between the different electronic parameters determining the regimes where Fano resonances or anti-resonances in the low-energy conductance spectrum can be expected. The results obtained within the coarse-grained model are validated using density-functional based quantum transport calculations in realistic T-shaped molecular junctions.

5 pages, 5 figures

References in corpus (3)

• Observation of Quantum Interference in Molecular Charge Transport
• Control of electron transport through Fano resonances in molecular wires
• Controlling the transmission line shape of molecular t-stubs and potential thermoelectric applications

Cited by in corpus (3)

• Stability of destructive interference antiresonances in electron transport through graphene nanostructures
• Enhancing the sensitivity and selectivity of pyrene-based sensors for detection of small gaseous molecules via destructive quantum interference
• Conformation Controllable Inelastic Charge Transport and Shot Noise Behavior in Metal-String Single Molecular Devices