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

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

2005-05-27

arxiv.org/abs/cond-mat/0505683v3

Phys. Rev. Lett. 95, 256803 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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

Scientific paper

10.1103/PhysRevLett.95.256803

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.

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