Electronic Transparence of a Single C60 Molecule

Christian Joachim, James K. Gimzewski, Reto R. Schlittler, and Corinne Chavy
Phys. Rev. Lett. 74, 2102 – Published 13 March 1995
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Abstract

We report the first study of electrical contact with an individual molecule (C60). Using a scanning tunneling microscope tip, the electrical current I flowing as a function of tip displacement s towards the molecule is investigated [ Is characteristics]. The tunneling current increases approximately exponentially with tip displacement in the tunnel regime, but this behavior changes significantly as contact is established. From the Is data and calculations for C60 we determine an apparent electrical resistance of 54.80 M Ω for the junction at “tip contact.” In the Landauer formalism, this value is a measurement of the electronic transparence 2.35×104 of the molecule under the tip.

  • Received 5 July 1994

DOI:https://doi.org/10.1103/PhysRevLett.74.2102

©1995 American Physical Society

Authors & Affiliations

Christian Joachim1, James K. Gimzewski2, Reto R. Schlittler2, and Corinne Chavy1

  • 1Centre d'Elaboration des Materiaux et d'Etudes Structurales-Centre National de la Recherche Scientifique, 29, rue J. Marvig, P.O. Box 4347, 31055 Toulouse Cedex, France
  • 2IBM Research Division, Zurich Research Laboratory, 8803 Rüschlikon, Switzerland

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Issue

Vol. 74, Iss. 11 — 13 March 1995

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