title: RETRACTED:  Field-induced superconductivity in a spin-ladder cuprate.
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.
authors.affiliation: Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, NJ 07974-0636, USA. j.hendrix@ratskrone.de
authors.forename: J H
authors.initials: JH
authors.lastname: Schön
authors.forename: M
authors.initials: M
authors.lastname: Dorget
authors.forename: F C
authors.initials: FC
authors.lastname: Beuran
authors.forename: X Z
authors.initials: XZ
authors.lastname: Xu
authors.forename: E
authors.initials: E
authors.lastname: Arushanov
authors.forename: M
authors.initials: M
authors.lastname: Laguës
authors.forename: C
authors.initials: C
authors.lastname: Deville Cavellin