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Science 28 April 2000:
Vol. 288. no. 5466, pp. 656 - 658
DOI: 10.1126/science.288.5466.656
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Reports

A Superconducting Field-Effect Switch

J. H. Schön, 1 Ch. Kloc, 1 R. C. Haddon, 2 B. Batlogg 1

We report here on a novel realization of a field-effect device that allows switching between insulating and superconducting states, which is the widest possible variation of electrical properties of a material. We chose C60 as the active material because of its low surface state density and observed superconductivity in alkali metal-doped C60. We induced three electrons per C60 molecule in the topmost molecular layer of a crystal with the field-effect device, creating a superconducting switch operating up to 11 kelvin. An insulator was thereby transformed into a superconductor. This technique offers new opportunities for the study of superconductivity as a function of carrier concentration.

1 Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, NJ 07974, USA.
2 Departments of Chemistry and Physics and Advanced Carbon Materials Center, University of Kentucky, Lexington, KY 40506, USA.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Structure of Haloform Intercalated C60 and Its Influence on Superconductive Properties.
R. E. Dinnebier, O. Gunnarsson, H. Brumm, E. Koch, P. W. Stephens, A. Huq, and M. Jansen (2002)
Science 296, 109-113
   Abstract »    Full Text »    PDF »
Field-Induced Superconductivity in a Spin-Ladder Cuprate.
J. H. Schon, M. Dorget, F. C. Beuran, X. Z. Xu, E. Arushanov, M. Lagues, and C. D. Cavellin (2001)
Science 293, 2430-2432
   Abstract »    Full Text »    PDF »
Josephson Junctions with Tunable Weak Links.
J. H. Schön, C. Kloc, H. Y. Hwang, and B. Batlogg (2001)
Science 292, 252-254
   Abstract »    Full Text »
High-Temperature Superconductivity in Lattice-Expanded C60.
J. H. Schon, Ch. Kloc, and B. Batlogg (2001)
Science 293, 2432-2434
   Abstract »    Full Text »    PDF »


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