Tuning the Kondo effect with a mechanically controllable break junction

Abstract

We study electron transport through C60 molecules in the Kondo regime using a mechanically controllable break junction. By varying the electrode spacing, we are able to change both the width and height of the Kondo resonance, indicating modification of the Kondo temperature and the relative strength of coupling to the two electrodes. The linear conductance as a function of T/T_K agrees with the scaling function expected for the spin-1/2 Kondo problem. We are also able to tune finite-bias Kondo features which appear at the energy of the first C60 intracage vibrational mode.

4 pages with 4 figures

References in corpus (4)

• Orbital Kondo effect in carbon nanotubes
• The Kondo effect in C${}_{60}$ single-molecule transistors
• Inelastic electron tunneling via molecular vibrations in single-molecule transistors
• Vibrational Sidebands and Kondo-effect in Molecular Transistors

Cited by in corpus (8)

• Electron-phonon interaction and full counting statistics in molecular junctions
• Universal Scaling of Nonequilibrium Transport in the Kondo Regime of Single Molecule Devices
• Electronic and optical properties of electromigrated molecular junctions
• Phonon-assisted tunneling and two-channel Kondo physics in molecular junctions
• Transport signature of pseudo-Jahn-Teller dynamics in a single-molecule transistor
• Temperature dependent conductances of deformable molecular devices
• Kondo effects in a C_60 single-molecule transistor
• Supplementary Information: Quantum phase transition in a single-molecule quantum dot