Many Body Effects on the Transport Properties of Single-Molecule Devices

Abstract

The conductance through a molecular device including electron-electron and electron-phonon interactions is calculated using the Numerical Renormalization Group method. At low temperatures and weak electron-phonon coupling the properties of the conductance can be explained in terms of the standard Kondo model with renormalized parameters. At large electron-phonon coupling a charge analog of the Kondo effect takes place that can be mapped into an anisotropic Kondo model. In this regime the molecule is strongly polarized by a gate voltage which leads to rectification in the current-voltage characteristics of the molecular junction.

4 pages, 4 figures, minor changes, added references

References in corpus (1)

• The Kondo effect in C${}_{60}$ single-molecule transistors

Cited by in corpus (4)

• Kondo resonances and anomalous gate dependence of electronic conduction in single-molecule transistors
• Vibrational Sidebands and Kondo-effect in Molecular Transistors
• Quantum transport through a deformable molecular transistor
• Magnetoconductance through a vibrating molecule in the Kondo regime