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Measurement of the conductance of a hydrogen molecule

Author

Listed:
  • R. H. M. Smit

    (Universiteit Leiden)

  • Y. Noat

    (Universiteit Leiden
    Université Denis Diderot (Paris 7), Groupe de Physique des Solides UMR 75 88)

  • C. Untiedt

    (Universiteit Leiden)

  • N. D. Lang

    (Thomas J. Watson Research Center)

  • M. C. van Hemert

    (Universiteit Leiden)

  • J. M. van Ruitenbeek

    (Universiteit Leiden)

Abstract

Recent years have shown steady progress towards molecular electronics1,2, in which molecules form basic components such as switches3,4,5, diodes6 and electronic mixers7. Often, a scanning tunnelling microscope is used to address an individual molecule, although this arrangement does not provide long-term stability. Therefore, metal–molecule–metal links using break-junction devices8,9,10 have also been explored; however, it is difficult to establish unambiguously that a single molecule forms the contact11. Here we show that a single hydrogen molecule can form a stable bridge between platinum electrodes. In contrast to results for organic molecules, the bridge has a nearly perfect conductance of one quantum unit, carried by a single channel. The hydrogen bridge represents a simple test system in which to understand fundamental transport properties of single-molecule devices.

Suggested Citation

  • R. H. M. Smit & Y. Noat & C. Untiedt & N. D. Lang & M. C. van Hemert & J. M. van Ruitenbeek, 2002. "Measurement of the conductance of a hydrogen molecule," Nature, Nature, vol. 419(6910), pages 906-909, October.
    • Handle: RePEc:nat:nature:v:419:y:2002:i:6910:d:10.1038_nature01103
    DOI: 10.1038/nature01103
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