Kondo resonances and anomalous gate dependence of electronic conduction in single-molecule transistors

Abstract

We report Kondo resonances in the conduction of single-molecule transistors based on transition metal coordination complexes. We find Kondo temperatures in excess of 50 K, comparable to those in purely metallic systems. The observed gate dependence of the Kondo temperature is inconsistent with observations in semiconductor quantum dots and a simple single-dot-level model. We discuss possible explanations of this effect, in light of electronic structure calculations.

5 pages, four figures. Supplementary material at http://www.ruf.rice.edu/~natelson/publications.html

References in corpus (4)

• The Kondo effect in C${}_{60}$ single-molecule transistors
• Inelastic electron tunneling via molecular vibrations in single-molecule transistors
• Many Body Effects on the Transport Properties of Single-Molecule Devices
• Quantum transport through a deformable molecular transistor

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