The dark side of benzene: interference vs. interaction

Abstract

We present the study of the linear conductance vs.\ applied gate voltage for an interacting six site ring structure, which is threaded by a flux of $\pi$ and coupled to a left and a right lead. This ring structure is designed to have a vanishing conductance for all gate voltages and temperatures provided interactions are ignored. Therefore this system is an ideal testbed to study the interplay of interaction and interference. First we find a Kondo type resonance for rather large hopping parameter. Second, we find additional resonance peaks which can be explained by a population blocking mechanism. To this end we have to extend the Kubo approach within the Density Matrix Renormalization Group method to handle degenerate states.

5 pages, 5 figures

References in corpus (5)

• Symmetry fingerprints of a benzene single-electron transistor
• Strong enhancement of transport by interaction on contact links
• Interplay between quantum interference and Kondo effects in nonequilibrium transport through nanoscopic systems
• Interplay between interference and Coulomb interaction in the ferromagnetic Anderson model with applied magnetic field
• Quantum Interference Controlled Molecular Electronics

Cited by in corpus (7)

• Auxiliary master equation approach to non-equilibrium correlated impurities
• Exact time-dependent density functional theory for impurity models
• Nonequilibrium conductance through a benzene molecule in the Kondo regime
• Density-matrix renormalization group method for the conductance of one-dimensional correlated systems using the Kubo formula
• The dark side of DFT based transport calculations
• Effects of electronic correlations and magnetic field on a molecular ring out of equilibrium
• Long-lived circulating currents in strongly correlated nanorings