Electronic Transport through Magnetic Molecules with Soft Vibrating Modes

Abstract

The low-temperature transport properties of a molecule are studied in the field-effect transitor geometry. The molecule has an internal mechanical mode that modulates its electronic levels and renormalizes both the interactions and the coupling to the electrodes. For a soft mechanical mode the spin fluctuations in the molecule are dominated by the bare couplings while the valence changes are determined by the dressed energies. In this case, the transport properties present an anomalous behavior and the Kondo temperature has a weak gate voltage dependence. These observations are in agreement with recent experimental data.

4 pages, 3 figures, accepted in PRB RC

References in corpus (6)

• Franck-Condon blockade and giant Fano factors in transport through single molecules
• The Kondo effect in C${}_{60}$ single-molecule transistors
• Many Body Effects on the Transport Properties of Single-Molecule Devices
• 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

Cited by in corpus (1)

• Nonequilibrium isolated molecule limit