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Nano Lett. 2007 Nov;7(11):3336-42. doi: 10.1021/nl0715802. Epub 2007 Oct 17.

Electronic excitations of a single molecule contacted in a three-terminal configuration.

Nano letters

Edgar A Osorio, Kevin O'Neill, Maarten Wegewijs, Nicolai Stuhr-Hansen, Jens Paaske, Thomas Bjørnholm, Herre S J van der Zant

Affiliations

  1. Kavli Institute of Nanoscience, Delft University of Technology, PO Box 5046, 2600 GA, The Netherlands.

PMID: 17941679 DOI: 10.1021/nl0715802

Abstract

Low-temperature three-terminal transport measurements through a thiol end-capped pi-conjugated molecule have been carried out. Electronic excitations, including zero and finite-bias Kondo-effects, have been observed and studied as a function of magnetic field. Using a simplified two-orbital model, we have accounted for the spin and the electronic configuration of the first four charge states of the molecule. The charge-dependent couplings to gate, source, and drain electrodes suggest a scenario in which charges and spins are localized at the ends of the molecule, close to the electrodes.

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