https://doi.org/10.1140/epjb/e2005-00224-2
Current dependent fluctuations in a Bi2Sr2CuO6+δ thin film
Laboratoire de Physique des Solides, CNRS
Université Paris-Sud, 91405 Orsay Cedex, France
Corresponding author: a fruchter@lps.u-psud.fr
Received:
26
January
2005
Revised:
15
April
2005
Published online:
19
July
2005
The current dependence of the excess conductivity is measured up to 
3Tc for a Bi2Sr2CuO
thin film, as a function of doping. It is found to be anomalously sensitive to the transport current and to behave as a universal function of 
in the whole doping range. We discuss these results in the perspective of a granular superconductor with a gapless-like behavior.
PACS: 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.) / 74.25.Sv – Critical currents / 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 74.72.Hs – Bi-based cuprates / 74.78.Bz – High-Tc films
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005
