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Field-induced superconductivity in a spin-ladder cuprate.

Authors
  • Schön, J H
  • Dorget, M
  • Beuran, F C
  • Xu, X Z
  • Arushanov, E
  • Laguës, M
  • Deville Cavellin, C
Type
Published Article
Journal
Science (New York, N.Y.)
Publication Date
Sep 28, 2001
Volume
293
Issue
5539
Pages
2430–2432
Identifiers
PMID: 11577230
Source
Medline
License
Unknown

Abstract

We report on the modulation of the transport properties of thin films, grown by molecular beam epitaxy, of the spin-ladder compound [CaCu2O3]4, using the field effect in a gated structure. At high hole-doping levels, superconductivity is induced in the nominally insulating ladder material without the use of high-pressure or chemical substitution. The observation of superconductivity is in agreement with the theoretical prediction that holes doped into spin ladders could pair and possibly superconduct.

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