G.1
Log Number: 23
Abstract Submitted to the NT-99-Logo NANOTUBE-99 Workshop:

Supercurrents Through Single-Walled Carbon Nanotubes

B. Reulet1, A. Yu. Kasumov1,2, R. Deblock1, M. Kociak1, H. Bouchiat1, I. I. Khodos2, Yu. B. Gorbatov2, V. T. Volkov2, C. Journet3, and M. Burghard4

1Laboratoire de Physique des Solides, Associé au CNRS, Bât 510, Université Paris-Sud, 91405, Orsay, France.
2Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka, 142432 Moscow Region, Russia.
3 Groupe de Dynamique des Phases Condensées, Université Montpellier II, 34095 Montpellier, France.
4Max Plank Institute,D-70506 Stuttgart, Germany

Contact e-mail: bouchiat@lps.u-psud.fr, Reulet@lps.u-psud.fr

Induced superconductivity in single wall carbon nanotubes by proximity effect is observed below 1K, both in single 1 nm diameter single tube and in individual crystalline ropes containing about 100 nanotubes. The samples are suspended between two superconducting electrodes which allows their structural study in a transmission electron microscope. When the resistance of the single wall nanotubes is sufficiently low, they become superconducting and can carry high supercurrents. The temperature and magnetic field dependence of the critical current exhibit unusual features related to the strong 1D character of these samples.

(To be published in SCIENCE)


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