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