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Field-Induced Superconductivity in a Spin-Ladder Cuprate
J. H. Schön,12*M. Dorget,34F. C. Beuran,4X. Z. Xu,4E. Arushanov,45M. Laguës,4C. Deville Cavellin34
We report on the modulation of the transport properties
of thin films, grown by molecular beam epitaxy, of the spin-laddercompound [CaCu2O3]4, using the
field effect in a gated structure.At high hole-doping levels,
superconductivity is induced in thenominally insulating ladder
material without the use of high-pressureor chemical substitution. The
observation of superconductivityis in agreement with the theoretical
prediction that holes dopedinto spin ladders could pair and possibly
superconduct.
1 Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, NJ 07974-0636, USA.
2 University of Konstanz, Department of Physics,
Post Office Box X916, D-78457 Konstanz, Germany.
3 Groupe de Physique des Milieux Denses,
Université Paris XII, 61 Avenue du Général de Gaulle,
94010 Créteil Cedex, France.
4 Surfaces et
Supraconducteurs CNRS UPR5-ESPCI, 10 Rue Vauquelin, 75005 Paris,
France.
5 Institute of Applied Physics, Academy of
Sciences of the Moldova Republic, Academiei str. 5, Kishinev 277028, Moldova.
*
To whom correspondence should be addressed. E-mail:
j.hendrix{at}ratskrone.de
The editors suggest the following Related Resources on Science sites:
In Science Magazine
REPORTS
J. H. Schön, Ch. Kloc, and B. Batlogg (28 September 2001) Science293 (5539), 2432.
[DOI: 10.1126/science.1064773] |Abstract »|Full Text »|PDF »
PERSPECTIVES
Elbio Dagotto (28 September 2001) Science293 (5539), 2410.
[DOI: 10.1126/science.1065711] |Summary »|Full Text »|PDF »
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Superconductivity in a Spin-Ladder Cuprate.
N. J. C. Ingle, M. R. Beasley, T. H. Geballe, J. H. Schon, M. Dorget, F. C. Beuran, X. Z. Xu, E. Arushanov, M. Lagues, and C. D. Cavellin (2002)
Science
295, 1967a
|Full Text »|PDF »
