Proximity effect in a superconductor-metallofullerene-superconductor molecular junction

A. Yu Kasumov, K. Tsukagoshi, M. Kawamura, T. Kobayashi, Y. Aoyagi, K. Senba, T. Kodama, H. Nishikawa, I. Ikemoto, K. Kikuchi, V. T. Volkov, Yu A. Kasumov, R. Deblock, S. Guéron, H. Bouchiat

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Abstract

We report low-temperature transport measurements through molecules of Gd metallofullerenes between superconducting suspended electrodes. The presence and number of molecules in the 2-nm-wide gap between electrodes was determined by high resolution transmission electron microscopy. We find that a junction containing a single metallofullerene dimer between superconducting electrodes displays signs of proximity-induced superconductivity. In contrast, no proximity effect develops in junctions containing a larger cluster of metallofullerenes. These results can be understood by taking into account multiple Andreev reflections, and the spin states of the Gd atoms.

Original languageEnglish
Article number033414
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number3
DOIs
Publication statusPublished - 2005 Jul 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Kasumov, A. Y., Tsukagoshi, K., Kawamura, M., Kobayashi, T., Aoyagi, Y., Senba, K., Kodama, T., Nishikawa, H., Ikemoto, I., Kikuchi, K., Volkov, V. T., Kasumov, Y. A., Deblock, R., Guéron, S., & Bouchiat, H. (2005). Proximity effect in a superconductor-metallofullerene-superconductor molecular junction. Physical Review B - Condensed Matter and Materials Physics, 72(3), [033414]. https://doi.org/10.1103/PhysRevB.72.033414