Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1999-04-02
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
12 pages, 12 figures to appear in Phys. Rev. B 59(19) 1999
Scientific paper
10.1103/PhysRevB.59.12505
Molecules of bisthiolterthiophene have been adsorbed on the two facing gold electrodes of a mechanically controllable break junction in order to form metal-molecule(s)-metal junctions. Current-voltage (I-V) characteristics have been recorded at room temperature. Zero bias conductances were measured in the 10-100 nS range and different kinds of non-linear I-V curves with step-like features were reproducibly obtained. Switching between different kinds of I-V curves could be induced by varying the distance between the two metallic electrodes. The experimental results are discussed within the framework of tunneling transport models explicitly taking into account the discrete nature of the electronic spectrum of the molecule.
Bourgoin Jean-Philippe
Esteve Daniel
Joachim Chrisitan
Kergueris C.
Magoga M.
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