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Article Dans Une Revue Nature Physics Année : 2009

Superconductivity in a single-C60 transistor

Résumé

Single-molecule transistors are currently attracting enormous attention as possible quantum information processing devices. An intrinsic limitation to their prospects, however, is associated with the presence of a small number of quantized conductance channels, each channel with a high access resistance of at best RK/2=h/2e2=12.9kΩ. However, when the contacting leads become superconducting, long-range correlations can extend throughout the whole system by means of the proximity effect. This not only lifts the resistive limitation of normal-state contacts, but further paves the way to probe electron transport through a single molecule. Here we demonstrate the realization of superconducting single-molecule transistors involving a single C60 fullerene molecule. In the past few years, we have seen gate-controlled Josephson supercurrents induced in the family of low-dimensional carbon structures such as flakes of two-dimensional graphene and portions of one-dimensional carbon nanotubes. The present study, involving a full zero-dimensional fullerene, completes the picture.

Dates et versions

hal-00700039 , version 1 (22-05-2012)

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Clemens Winkelmann, Nicolas Roch, Wolfgang Wernsdorfer, Vincent Bouchiat, Franck Balestro. Superconductivity in a single-C60 transistor. Nature Physics, 2009, 5, pp.876-879. ⟨10.1038/NPHYS1433⟩. ⟨hal-00700039⟩

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